diff --git a/README.md b/README.md
index 7479d58..7168599 100644
--- a/README.md
+++ b/README.md
@@ -32,9 +32,10 @@ $path = $balancer->get("home_banner");
  * Deterministic balance, given a configuration and a valid seed, 
  * you'll always get the same result
  *
- * Valid seeds are non-empty strings and unsigned integers
+ * Valid seeds are non-empty strings and unsigned numbers
  */
 $path = $balancer->get("after_update_email", 78549612);
+$path = $balancer->get("after_update_email", -4.75);
 $path = $balancer->get("after_update_email", "my_user@example.com");
 ```
 
@@ -140,12 +141,12 @@ $path = $balancer->get("home_banner");
 ### Seed based deterministic retrieval
 If you pass a seed, the path will be decided using a simple yet infallible algorithm so that for *every given configuration and seed, it will always choose the same path*
 
-**NOTE** This means that the path can change if either the configuration orthe seed changes
+**NOTE** This means that the path can change if either the configuration or the seed changes
 
-You can pass both signed integers or non-empty strings as seed
+You can pass both signed numbers (integers and doubles) or non-empty strings as seed
 
 ```php
 $path = $balancer->get("after_update_email", 78549612);
-$path = $balancer->get("after_update_email", -23);
+$path = $balancer->get("after_update_email", -23.54);
 $path = $balancer->get("after_update_email", "my_user@example.com");
 ```
diff --git a/composer.json b/composer.json
index b71d262..391f917 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,8 @@
     "require-dev": {
         "phpspec/phpspec": "^2.0",
         "phpunit/php-code-coverage": "^2.2",
-        "pluggit/monitoring": "^2.0"
+        "pluggit/monitoring": "^2.0",
+        "coduo/phpspec-data-provider-extension": "^1.0"
     },
     "config": {
         "bin-dir": "bin"
diff --git a/composer.lock b/composer.lock
index f5aed43..8c0f770 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,34 +4,43 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "24083c3e53d81dab53da8e91ef0c6acb",
+    "hash": "d68ae2988c0b7ced24d5478efe14fab3",
+    "content-hash": "aa29e9f33f423a6013330258abb1051c",
     "packages": [
         {
-            "name": "psr/log",
-            "version": "1.0.2",
+            "name": "coduo/phpspec-data-provider-extension",
+            "version": "1.0.3",
             "source": {
                 "type": "git",
-                "url": "https://github.com/php-fig/log.git",
-                "reference": "4ebe3a8bf773a19edfe0a84b6585ba3d401b724d"
+                "url": "https://github.com/coduo/phpspec-data-provider-extension.git",
+                "reference": "b8d5c8594fec5ab2d7000bc31822a411bcd45146"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/php-fig/log/zipball/4ebe3a8bf773a19edfe0a84b6585ba3d401b724d",
-                "reference": "4ebe3a8bf773a19edfe0a84b6585ba3d401b724d",
+                "url": "https://api.github.com/repos/coduo/phpspec-data-provider-extension/zipball/b8d5c8594fec5ab2d7000bc31822a411bcd45146",
+                "reference": "b8d5c8594fec5ab2d7000bc31822a411bcd45146",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.0"
+                "php": ">=5.4.0",
+                "phpspec/phpspec": "^2"
+            },
+            "require-dev": {
+                "behat/behat": "3.0.*",
+                "bossa/phpspec2-expect": "^1",
+                "symfony/console": "~2.3.2",
+                "symfony/filesystem": "~2.3",
+                "symfony/process": "~2.3"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.0.x-dev"
+                    "dev-master": "1.1-dev"
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Psr\\Log\\": "Psr/Log/"
+                "psr-0": {
+                    "Coduo\\PhpSpec": "src/"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -40,21 +49,24 @@
             ],
             "authors": [
                 {
-                    "name": "PHP-FIG",
-                    "homepage": "http://www.php-fig.org/"
+                    "name": "Norbert Orzechowicz",
+                    "email": "norbert@orzechowicz.pl"
+                },
+                {
+                    "name": "Michał Dąbrowski",
+                    "email": "dabrowski@brillante.pl"
                 }
             ],
-            "description": "Common interface for logging libraries",
-            "homepage": "https://github.com/php-fig/log",
             "keywords": [
-                "log",
-                "psr",
-                "psr-3"
-            ],
-            "time": "2016-10-10T12:19:37+00:00"
-        }
-    ],
-    "packages-dev": [
+                "coduo",
+                "data",
+                "dataprovider",
+                "extension",
+                "phpspec",
+                "provider"
+            ],
+            "time": "2015-10-27 14:27:37"
+        },
         {
             "name": "doctrine/instantiator",
             "version": "1.0.5",
@@ -107,7 +119,7 @@
                 "constructor",
                 "instantiate"
             ],
-            "time": "2015-06-14T21:17:01+00:00"
+            "time": "2015-06-14 21:17:01"
         },
         {
             "name": "phpdocumentor/reflection-common",
@@ -161,7 +173,7 @@
                 "reflection",
                 "static analysis"
             ],
-            "time": "2015-12-27T11:43:31+00:00"
+            "time": "2015-12-27 11:43:31"
         },
         {
             "name": "phpdocumentor/reflection-docblock",
@@ -206,7 +218,7 @@
                 }
             ],
             "description": "With this component, a library can provide support for annotations via DocBlocks or otherwise retrieve information that is embedded in a DocBlock.",
-            "time": "2016-09-30T07:12:33+00:00"
+            "time": "2016-09-30 07:12:33"
         },
         {
             "name": "phpdocumentor/type-resolver",
@@ -253,7 +265,7 @@
                     "email": "me@mikevanriel.com"
                 }
             ],
-            "time": "2016-11-25T06:54:22+00:00"
+            "time": "2016-11-25 06:54:22"
         },
         {
             "name": "phpspec/php-diff",
@@ -287,7 +299,7 @@
                 }
             ],
             "description": "A comprehensive library for generating differences between two hashable objects (strings or arrays).",
-            "time": "2013-11-01T13:02:21+00:00"
+            "time": "2013-11-01 13:02:21"
         },
         {
             "name": "phpspec/phpspec",
@@ -365,7 +377,7 @@
                 "testing",
                 "tests"
             ],
-            "time": "2017-05-12T06:09:08+00:00"
+            "time": "2017-05-12 06:09:08"
         },
         {
             "name": "phpspec/prophecy",
@@ -428,91 +440,81 @@
                 "spy",
                 "stub"
             ],
-            "time": "2017-03-02T20:05:34+00:00"
+            "time": "2017-03-02 20:05:34"
         },
         {
-            "name": "phpunit/php-code-coverage",
-            "version": "2.2.4",
+            "name": "psr/log",
+            "version": "1.0.2",
             "source": {
                 "type": "git",
-                "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
-                "reference": "eabf68b476ac7d0f73793aada060f1c1a9bf8979"
+                "url": "https://github.com/php-fig/log.git",
+                "reference": "4ebe3a8bf773a19edfe0a84b6585ba3d401b724d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/eabf68b476ac7d0f73793aada060f1c1a9bf8979",
-                "reference": "eabf68b476ac7d0f73793aada060f1c1a9bf8979",
+                "url": "https://api.github.com/repos/php-fig/log/zipball/4ebe3a8bf773a19edfe0a84b6585ba3d401b724d",
+                "reference": "4ebe3a8bf773a19edfe0a84b6585ba3d401b724d",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.3",
-                "phpunit/php-file-iterator": "~1.3",
-                "phpunit/php-text-template": "~1.2",
-                "phpunit/php-token-stream": "~1.3",
-                "sebastian/environment": "^1.3.2",
-                "sebastian/version": "~1.0"
-            },
-            "require-dev": {
-                "ext-xdebug": ">=2.1.4",
-                "phpunit/phpunit": "~4"
-            },
-            "suggest": {
-                "ext-dom": "*",
-                "ext-xdebug": ">=2.2.1",
-                "ext-xmlwriter": "*"
+                "php": ">=5.3.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.2.x-dev"
+                    "dev-master": "1.0.x-dev"
                 }
             },
             "autoload": {
-                "classmap": [
-                    "src/"
-                ]
+                "psr-4": {
+                    "Psr\\Log\\": "Psr/Log/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "BSD-3-Clause"
+                "MIT"
             ],
             "authors": [
                 {
-                    "name": "Sebastian Bergmann",
-                    "email": "sb@sebastian-bergmann.de",
-                    "role": "lead"
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
                 }
             ],
-            "description": "Library that provides collection, processing, and rendering functionality for PHP code coverage information.",
-            "homepage": "https://github.com/sebastianbergmann/php-code-coverage",
+            "description": "Common interface for logging libraries",
+            "homepage": "https://github.com/php-fig/log",
             "keywords": [
-                "coverage",
-                "testing",
-                "xunit"
+                "log",
+                "psr",
+                "psr-3"
             ],
-            "time": "2015-10-06T15:47:00+00:00"
+            "time": "2016-10-10 12:19:37"
         },
         {
-            "name": "phpunit/php-file-iterator",
-            "version": "1.4.2",
+            "name": "sebastian/comparator",
+            "version": "1.2.4",
             "source": {
                 "type": "git",
-                "url": "https://github.com/sebastianbergmann/php-file-iterator.git",
-                "reference": "3cc8f69b3028d0f96a9078e6295d86e9bf019be5"
+                "url": "https://github.com/sebastianbergmann/comparator.git",
+                "reference": "2b7424b55f5047b47ac6e5ccb20b2aea4011d9be"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-file-iterator/zipball/3cc8f69b3028d0f96a9078e6295d86e9bf019be5",
-                "reference": "3cc8f69b3028d0f96a9078e6295d86e9bf019be5",
+                "url": "https://api.github.com/repos/sebastianbergmann/comparator/zipball/2b7424b55f5047b47ac6e5ccb20b2aea4011d9be",
+                "reference": "2b7424b55f5047b47ac6e5ccb20b2aea4011d9be",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.3"
+                "php": ">=5.3.3",
+                "sebastian/diff": "~1.2",
+                "sebastian/exporter": "~1.2 || ~2.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.4"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.4.x-dev"
+                    "dev-master": "1.2.x-dev"
                 }
             },
             "autoload": {
@@ -525,38 +527,58 @@
                 "BSD-3-Clause"
             ],
             "authors": [
+                {
+                    "name": "Jeff Welch",
+                    "email": "whatthejeff@gmail.com"
+                },
+                {
+                    "name": "Volker Dusch",
+                    "email": "github@wallbash.com"
+                },
+                {
+                    "name": "Bernhard Schussek",
+                    "email": "bschussek@2bepublished.at"
+                },
                 {
                     "name": "Sebastian Bergmann",
-                    "email": "sb@sebastian-bergmann.de",
-                    "role": "lead"
+                    "email": "sebastian@phpunit.de"
                 }
             ],
-            "description": "FilterIterator implementation that filters files based on a list of suffixes.",
-            "homepage": "https://github.com/sebastianbergmann/php-file-iterator/",
+            "description": "Provides the functionality to compare PHP values for equality",
+            "homepage": "http://www.github.com/sebastianbergmann/comparator",
             "keywords": [
-                "filesystem",
-                "iterator"
+                "comparator",
+                "compare",
+                "equality"
             ],
-            "time": "2016-10-03T07:40:28+00:00"
+            "time": "2017-01-29 09:50:25"
         },
         {
-            "name": "phpunit/php-text-template",
-            "version": "1.2.1",
+            "name": "sebastian/diff",
+            "version": "1.4.3",
             "source": {
                 "type": "git",
-                "url": "https://github.com/sebastianbergmann/php-text-template.git",
-                "reference": "31f8b717e51d9a2afca6c9f046f5d69fc27c8686"
+                "url": "https://github.com/sebastianbergmann/diff.git",
+                "reference": "7f066a26a962dbe58ddea9f72a4e82874a3975a4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-text-template/zipball/31f8b717e51d9a2afca6c9f046f5d69fc27c8686",
-                "reference": "31f8b717e51d9a2afca6c9f046f5d69fc27c8686",
+                "url": "https://api.github.com/repos/sebastianbergmann/diff/zipball/7f066a26a962dbe58ddea9f72a4e82874a3975a4",
+                "reference": "7f066a26a962dbe58ddea9f72a4e82874a3975a4",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.3"
+                "php": "^5.3.3 || ^7.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.0"
             },
             "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.4-dev"
+                }
+            },
             "autoload": {
                 "classmap": [
                     "src/"
@@ -567,44 +589,48 @@
                 "BSD-3-Clause"
             ],
             "authors": [
+                {
+                    "name": "Kore Nordmann",
+                    "email": "mail@kore-nordmann.de"
+                },
                 {
                     "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de",
-                    "role": "lead"
+                    "email": "sebastian@phpunit.de"
                 }
             ],
-            "description": "Simple template engine.",
-            "homepage": "https://github.com/sebastianbergmann/php-text-template/",
+            "description": "Diff implementation",
+            "homepage": "https://github.com/sebastianbergmann/diff",
             "keywords": [
-                "template"
+                "diff"
             ],
-            "time": "2015-06-21T13:50:34+00:00"
+            "time": "2017-05-22 07:24:03"
         },
         {
-            "name": "phpunit/php-token-stream",
-            "version": "1.4.11",
+            "name": "sebastian/exporter",
+            "version": "2.0.0",
             "source": {
                 "type": "git",
-                "url": "https://github.com/sebastianbergmann/php-token-stream.git",
-                "reference": "e03f8f67534427a787e21a385a67ec3ca6978ea7"
+                "url": "https://github.com/sebastianbergmann/exporter.git",
+                "reference": "ce474bdd1a34744d7ac5d6aad3a46d48d9bac4c4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-token-stream/zipball/e03f8f67534427a787e21a385a67ec3ca6978ea7",
-                "reference": "e03f8f67534427a787e21a385a67ec3ca6978ea7",
+                "url": "https://api.github.com/repos/sebastianbergmann/exporter/zipball/ce474bdd1a34744d7ac5d6aad3a46d48d9bac4c4",
+                "reference": "ce474bdd1a34744d7ac5d6aad3a46d48d9bac4c4",
                 "shasum": ""
             },
             "require": {
-                "ext-tokenizer": "*",
-                "php": ">=5.3.3"
+                "php": ">=5.3.3",
+                "sebastian/recursion-context": "~2.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "~4.2"
+                "ext-mbstring": "*",
+                "phpunit/phpunit": "~4.4"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.4-dev"
+                    "dev-master": "2.0.x-dev"
                 }
             },
             "autoload": {
@@ -617,421 +643,455 @@
                 "BSD-3-Clause"
             ],
             "authors": [
+                {
+                    "name": "Jeff Welch",
+                    "email": "whatthejeff@gmail.com"
+                },
+                {
+                    "name": "Volker Dusch",
+                    "email": "github@wallbash.com"
+                },
+                {
+                    "name": "Bernhard Schussek",
+                    "email": "bschussek@2bepublished.at"
+                },
                 {
                     "name": "Sebastian Bergmann",
                     "email": "sebastian@phpunit.de"
+                },
+                {
+                    "name": "Adam Harvey",
+                    "email": "aharvey@php.net"
                 }
             ],
-            "description": "Wrapper around PHP's tokenizer extension.",
-            "homepage": "https://github.com/sebastianbergmann/php-token-stream/",
+            "description": "Provides the functionality to export PHP variables for visualization",
+            "homepage": "http://www.github.com/sebastianbergmann/exporter",
             "keywords": [
-                "tokenizer"
+                "export",
+                "exporter"
             ],
-            "time": "2017-02-27T10:12:30+00:00"
+            "time": "2016-11-19 08:54:04"
         },
         {
-            "name": "pluggit/monitoring",
+            "name": "sebastian/recursion-context",
             "version": "2.0.0",
             "source": {
                 "type": "git",
-                "url": "https://github.com/CMProductions/monitoring.git",
-                "reference": "7331808fc5a8b5ab0bc2ed4275ce1c83b6889978"
+                "url": "https://github.com/sebastianbergmann/recursion-context.git",
+                "reference": "2c3ba150cbec723aa057506e73a8d33bdb286c9a"
             },
             "dist": {
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-                "reference": "7331808fc5a8b5ab0bc2ed4275ce1c83b6889978",
+                "url": "https://api.github.com/repos/sebastianbergmann/recursion-context/zipball/2c3ba150cbec723aa057506e73a8d33bdb286c9a",
+                "reference": "2c3ba150cbec723aa057506e73a8d33bdb286c9a",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.5|^7.0",
-                "psr/log": "^1.0"
+                "php": ">=5.3.3"
             },
             "require-dev": {
-                "behat/behat": "^3.1",
-                "henrikbjorn/phpspec-code-coverage": "2.*",
-                "phpspec/phpspec": "^2.5",
-                "phpunit/php-code-coverage": "^2.2",
-                "phpunit/phpunit": "4.8.*",
-                "squizlabs/php_codesniffer": "2.*"
+                "phpunit/phpunit": "~4.4"
             },
             "type": "library",
-            "autoload": {
-                "psr-4": {
-                    "Cmp\\Monitoring\\": "src/",
-                    "bin\\Cmp\\Monitoring\\": "bin/"
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.0.x-dev"
                 }
             },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "MIT"
+                "BSD-3-Clause"
             ],
             "authors": [
                 {
-                    "name": "jaroslawgabaracmp",
-                    "email": "jaroslaw.gabara@teamcmp.com"
+                    "name": "Jeff Welch",
+                    "email": "whatthejeff@gmail.com"
+                },
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                },
+                {
+                    "name": "Adam Harvey",
+                    "email": "aharvey@php.net"
                 }
             ],
-            "description": "Monitoring abstraction layer",
-            "time": "2017-02-14T12:04:07+00:00"
+            "description": "Provides functionality to recursively process PHP variables",
+            "homepage": "http://www.github.com/sebastianbergmann/recursion-context",
+            "time": "2016-11-19 07:33:16"
         },
         {
-            "name": "sebastian/comparator",
-            "version": "1.2.4",
-            "source": {
+            "name": "symfony/console",
+            "version": "v3.3.2",
+            "source": {
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-                "url": "https://github.com/sebastianbergmann/comparator.git",
-                "reference": "2b7424b55f5047b47ac6e5ccb20b2aea4011d9be"
+                "url": "https://github.com/symfony/console.git",
+                "reference": "70d2a29b2911cbdc91a7e268046c395278238b2e"
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             ],
-            "description": "Symfony Debug Component",
-            "homepage": "https://symfony.com",
-            "time": "2017-06-01T21:01:25+00:00"
-        },
+            "description": "Assertions to validate method input/output with nice error messages.",
+            "keywords": [
+                "assert",
+                "check",
+                "validate"
+            ],
+            "time": "2016-11-23 20:04:58"
+        }
+    ],
+    "packages-dev": [
         {
-            "name": "symfony/event-dispatcher",
-            "version": "v3.3.2",
+            "name": "phpunit/php-code-coverage",
+            "version": "2.2.4",
             "source": {
                 "type": "git",
-                "url": "https://github.com/symfony/event-dispatcher.git",
-                "reference": "4054a102470665451108f9b59305c79176ef98f0"
+                "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
+                "reference": "eabf68b476ac7d0f73793aada060f1c1a9bf8979"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/event-dispatcher/zipball/4054a102470665451108f9b59305c79176ef98f0",
-                "reference": "4054a102470665451108f9b59305c79176ef98f0",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/eabf68b476ac7d0f73793aada060f1c1a9bf8979",
+                "reference": "eabf68b476ac7d0f73793aada060f1c1a9bf8979",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.5.9"
-            },
-            "conflict": {
-                "symfony/dependency-injection": "<3.3"
+                "php": ">=5.3.3",
+                "phpunit/php-file-iterator": "~1.3",
+                "phpunit/php-text-template": "~1.2",
+                "phpunit/php-token-stream": "~1.3",
+                "sebastian/environment": "^1.3.2",
+                "sebastian/version": "~1.0"
             },
             "require-dev": {
-                "psr/log": "~1.0",
-                "symfony/config": "~2.8|~3.0",
-                "symfony/dependency-injection": "~3.3",
-                "symfony/expression-language": "~2.8|~3.0",
-                "symfony/stopwatch": "~2.8|~3.0"
+                "ext-xdebug": ">=2.1.4",
+                "phpunit/phpunit": "~4"
             },
             "suggest": {
-                "symfony/dependency-injection": "",
-                "symfony/http-kernel": ""
+                "ext-dom": "*",
+                "ext-xdebug": ">=2.2.1",
+                "ext-xmlwriter": "*"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.2.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sb@sebastian-bergmann.de",
+                    "role": "lead"
+                }
+            ],
+            "description": "Library that provides collection, processing, and rendering functionality for PHP code coverage information.",
+            "homepage": "https://github.com/sebastianbergmann/php-code-coverage",
+            "keywords": [
+                "coverage",
+                "testing",
+                "xunit"
+            ],
+            "time": "2015-10-06 15:47:00"
+        },
+        {
+            "name": "phpunit/php-file-iterator",
+            "version": "1.4.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/php-file-iterator.git",
+                "reference": "3cc8f69b3028d0f96a9078e6295d86e9bf019be5"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-file-iterator/zipball/3cc8f69b3028d0f96a9078e6295d86e9bf019be5",
+                "reference": "3cc8f69b3028d0f96a9078e6295d86e9bf019be5",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.3-dev"
+                    "dev-master": "1.4.x-dev"
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Component\\EventDispatcher\\": ""
-                },
-                "exclude-from-classmap": [
-                    "/Tests/"
+                "classmap": [
+                    "src/"
                 ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "MIT"
+                "BSD-3-Clause"
             ],
             "authors": [
                 {
-                    "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "https://symfony.com/contributors"
+                    "name": "Sebastian Bergmann",
+                    "email": "sb@sebastian-bergmann.de",
+                    "role": "lead"
                 }
             ],
-            "description": "Symfony EventDispatcher Component",
-            "homepage": "https://symfony.com",
-            "time": "2017-06-04T18:15:29+00:00"
+            "description": "FilterIterator implementation that filters files based on a list of suffixes.",
+            "homepage": "https://github.com/sebastianbergmann/php-file-iterator/",
+            "keywords": [
+                "filesystem",
+                "iterator"
+            ],
+            "time": "2016-10-03 07:40:28"
         },
         {
-            "name": "symfony/finder",
-            "version": "v3.3.2",
+            "name": "phpunit/php-text-template",
+            "version": "1.2.1",
             "source": {
                 "type": "git",
-                "url": "https://github.com/symfony/finder.git",
-                "reference": "baea7f66d30854ad32988c11a09d7ffd485810c4"
+                "url": "https://github.com/sebastianbergmann/php-text-template.git",
+                "reference": "31f8b717e51d9a2afca6c9f046f5d69fc27c8686"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/finder/zipball/baea7f66d30854ad32988c11a09d7ffd485810c4",
-                "reference": "baea7f66d30854ad32988c11a09d7ffd485810c4",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-text-template/zipball/31f8b717e51d9a2afca6c9f046f5d69fc27c8686",
+                "reference": "31f8b717e51d9a2afca6c9f046f5d69fc27c8686",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.5.9"
+                "php": ">=5.3.3"
             },
             "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "3.3-dev"
-                }
-            },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Component\\Finder\\": ""
-                },
-                "exclude-from-classmap": [
-                    "/Tests/"
+                "classmap": [
+                    "src/"
                 ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "MIT"
+                "BSD-3-Clause"
             ],
             "authors": [
                 {
-                    "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "https://symfony.com/contributors"
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de",
+                    "role": "lead"
                 }
             ],
-            "description": "Symfony Finder Component",
-            "homepage": "https://symfony.com",
-            "time": "2017-06-01T21:01:25+00:00"
+            "description": "Simple template engine.",
+            "homepage": "https://github.com/sebastianbergmann/php-text-template/",
+            "keywords": [
+                "template"
+            ],
+            "time": "2015-06-21 13:50:34"
         },
         {
-            "name": "symfony/polyfill-mbstring",
-            "version": "v1.4.0",
+            "name": "phpunit/php-token-stream",
+            "version": "1.4.11",
             "source": {
                 "type": "git",
-                "url": "https://github.com/symfony/polyfill-mbstring.git",
-                "reference": "f29dca382a6485c3cbe6379f0c61230167681937"
+                "url": "https://github.com/sebastianbergmann/php-token-stream.git",
+                "reference": "e03f8f67534427a787e21a385a67ec3ca6978ea7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/f29dca382a6485c3cbe6379f0c61230167681937",
-                "reference": "f29dca382a6485c3cbe6379f0c61230167681937",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-token-stream/zipball/e03f8f67534427a787e21a385a67ec3ca6978ea7",
+                "reference": "e03f8f67534427a787e21a385a67ec3ca6978ea7",
                 "shasum": ""
             },
             "require": {
+                "ext-tokenizer": "*",
                 "php": ">=5.3.3"
             },
-            "suggest": {
-                "ext-mbstring": "For best performance"
+            "require-dev": {
+                "phpunit/phpunit": "~4.2"
             },
             "type": "library",
             "extra": {
@@ -1260,68 +1355,59 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Mbstring\\": ""
-                },
-                "files": [
-                    "bootstrap.php"
+                "classmap": [
+                    "src/"
                 ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "MIT"
+                "BSD-3-Clause"
             ],
             "authors": [
                 {
-                    "name": "Nicolas Grekas",
-                    "email": "p@tchwork.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "https://symfony.com/contributors"
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
                 }
             ],
-            "description": "Symfony polyfill for the Mbstring extension",
-            "homepage": "https://symfony.com",
+            "description": "Wrapper around PHP's tokenizer extension.",
+            "homepage": "https://github.com/sebastianbergmann/php-token-stream/",
             "keywords": [
-                "compatibility",
-                "mbstring",
-                "polyfill",
-                "portable",
-                "shim"
+                "tokenizer"
             ],
-            "time": "2017-06-09T14:24:12+00:00"
+            "time": "2017-02-27 10:12:30"
         },
         {
-            "name": "symfony/process",
-            "version": "v3.3.2",
+            "name": "pluggit/monitoring",
+            "version": "2.0.0",
             "source": {
                 "type": "git",
-                "url": "https://github.com/symfony/process.git",
-                "reference": "8e30690c67aafb6c7992d6d8eb0d707807dd3eaf"
+                "url": "https://github.com/CMProductions/monitoring.git",
+                "reference": "7331808fc5a8b5ab0bc2ed4275ce1c83b6889978"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/process/zipball/8e30690c67aafb6c7992d6d8eb0d707807dd3eaf",
-                "reference": "8e30690c67aafb6c7992d6d8eb0d707807dd3eaf",
+                "url": "https://api.github.com/repos/CMProductions/monitoring/zipball/7331808fc5a8b5ab0bc2ed4275ce1c83b6889978",
+                "reference": "7331808fc5a8b5ab0bc2ed4275ce1c83b6889978",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.5.9"
+                "php": "^5.5|^7.0",
+                "psr/log": "^1.0"
             },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "3.3-dev"
-                }
+            "require-dev": {
+                "behat/behat": "^3.1",
+                "henrikbjorn/phpspec-code-coverage": "2.*",
+                "phpspec/phpspec": "^2.5",
+                "phpunit/php-code-coverage": "^2.2",
+                "phpunit/phpunit": "4.8.*",
+                "squizlabs/php_codesniffer": "2.*"
             },
+            "type": "library",
             "autoload": {
                 "psr-4": {
-                    "Symfony\\Component\\Process\\": ""
-                },
-                "exclude-from-classmap": [
-                    "/Tests/"
-                ]
+                    "Cmp\\Monitoring\\": "src/",
+                    "bin\\Cmp\\Monitoring\\": "bin/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -1329,122 +1415,97 @@
             ],
             "authors": [
                 {
-                    "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "https://symfony.com/contributors"
+                    "name": "jaroslawgabaracmp",
+                    "email": "jaroslaw.gabara@teamcmp.com"
                 }
             ],
-            "description": "Symfony Process Component",
-            "homepage": "https://symfony.com",
-            "time": "2017-05-22T12:32:03+00:00"
+            "description": "Monitoring abstraction layer",
+            "time": "2017-02-14 12:04:07"
         },
         {
-            "name": "symfony/yaml",
-            "version": "v3.3.2",
+            "name": "sebastian/environment",
+            "version": "1.3.8",
             "source": {
                 "type": "git",
-                "url": "https://github.com/symfony/yaml.git",
-                "reference": "9752a30000a8ca9f4b34b5227d15d0101b96b063"
+                "url": "https://github.com/sebastianbergmann/environment.git",
+                "reference": "be2c607e43ce4c89ecd60e75c6a85c126e754aea"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/yaml/zipball/9752a30000a8ca9f4b34b5227d15d0101b96b063",
-                "reference": "9752a30000a8ca9f4b34b5227d15d0101b96b063",
+                "url": "https://api.github.com/repos/sebastianbergmann/environment/zipball/be2c607e43ce4c89ecd60e75c6a85c126e754aea",
+                "reference": "be2c607e43ce4c89ecd60e75c6a85c126e754aea",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.5.9"
+                "php": "^5.3.3 || ^7.0"
             },
             "require-dev": {
-                "symfony/console": "~2.8|~3.0"
-            },
-            "suggest": {
-                "symfony/console": "For validating YAML files using the lint command"
+                "phpunit/phpunit": "^4.8 || ^5.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.3-dev"
+                    "dev-master": "1.3.x-dev"
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Component\\Yaml\\": ""
-                },
-                "exclude-from-classmap": [
-                    "/Tests/"
+                "classmap": [
+                    "src/"
                 ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "MIT"
+                "BSD-3-Clause"
             ],
             "authors": [
                 {
-                    "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "https://symfony.com/contributors"
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
                 }
             ],
-            "description": "Symfony Yaml Component",
-            "homepage": "https://symfony.com",
-            "time": "2017-06-02T22:05:06+00:00"
+            "description": "Provides functionality to handle HHVM/PHP environments",
+            "homepage": "http://www.github.com/sebastianbergmann/environment",
+            "keywords": [
+                "Xdebug",
+                "environment",
+                "hhvm"
+            ],
+            "time": "2016-08-18 05:49:44"
         },
         {
-            "name": "webmozart/assert",
-            "version": "1.2.0",
+            "name": "sebastian/version",
+            "version": "1.0.6",
             "source": {
                 "type": "git",
-                "url": "https://github.com/webmozart/assert.git",
-                "reference": "2db61e59ff05fe5126d152bd0655c9ea113e550f"
+                "url": "https://github.com/sebastianbergmann/version.git",
+                "reference": "58b3a85e7999757d6ad81c787a1fbf5ff6c628c6"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/webmozart/assert/zipball/2db61e59ff05fe5126d152bd0655c9ea113e550f",
-                "reference": "2db61e59ff05fe5126d152bd0655c9ea113e550f",
+                "url": "https://api.github.com/repos/sebastianbergmann/version/zipball/58b3a85e7999757d6ad81c787a1fbf5ff6c628c6",
+                "reference": "58b3a85e7999757d6ad81c787a1fbf5ff6c628c6",
                 "shasum": ""
             },
-            "require": {
-                "php": "^5.3.3 || ^7.0"
-            },
-            "require-dev": {
-                "phpunit/phpunit": "^4.6",
-                "sebastian/version": "^1.0.1"
-            },
             "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.3-dev"
-                }
-            },
             "autoload": {
-                "psr-4": {
-                    "Webmozart\\Assert\\": "src/"
-                }
+                "classmap": [
+                    "src/"
+                ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "MIT"
+                "BSD-3-Clause"
             ],
             "authors": [
                 {
-                    "name": "Bernhard Schussek",
-                    "email": "bschussek@gmail.com"
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de",
+                    "role": "lead"
                 }
             ],
-            "description": "Assertions to validate method input/output with nice error messages.",
-            "keywords": [
-                "assert",
-                "check",
-                "validate"
-            ],
-            "time": "2016-11-23T20:04:58+00:00"
+            "description": "Library that helps with managing the version number of Git-hosted PHP projects",
+            "homepage": "https://github.com/sebastianbergmann/version",
+            "time": "2015-06-21 13:59:46"
         }
     ],
     "aliases": [],
diff --git a/phpspec.yml b/phpspec.yml
index ead96c8..7633feb 100644
--- a/phpspec.yml
+++ b/phpspec.yml
@@ -1,4 +1,7 @@
+formatter.name: pretty
 suites:
     acme_suite:
         namespace: Cmp\FeatureBalancer
-        psr4_prefix: Cmp\FeatureBalancer
\ No newline at end of file
+        psr4_prefix: Cmp\FeatureBalancer
+extensions:
+    - Coduo\PhpSpec\DataProvider\DataProviderExtension
\ No newline at end of file
diff --git a/spec/BalancerSpec.php b/spec/BalancerSpec.php
index fda0f99..9f727e7 100644
--- a/spec/BalancerSpec.php
+++ b/spec/BalancerSpec.php
@@ -34,8 +34,8 @@ function it_can_distribute_hits_across_features_based_on_numeric_seeds()
 
     function it_can_distribute_hits_across_features_based_on_string_seeds()
     {
-        $this->get("foo", "bar")->shouldReturn("abc");
-        $this->get("foo", "aaa")->shouldReturn("def");
+        $this->get("foo", "bar")->shouldReturn("def");
+        $this->get("foo", "foo")->shouldReturn("abc");
     }
 
     function it_can_distribute_hits_across_features_without_seed()
diff --git a/spec/SeedSpec.php b/spec/SeedSpec.php
index c6472f6..ade95b4 100644
--- a/spec/SeedSpec.php
+++ b/spec/SeedSpec.php
@@ -31,21 +31,25 @@ function it_fails_when_the_seed_is_not_valid()
         $this->shouldThrow(InvalidArgumentException::class)->during('__construct', [new \stdClass(), []]);
     }
 
-    function it_can_determine_seed_from_strings()
+    /**
+     * @dataProvider seedConversionExamples
+     */
+    function it_can_determine_the_seed($inputValue, $expectedValue)
     {
-        $this->beConstructedWith("foo");
-        $this->seed()->shouldReturn(24);
-    }
-
-    function it_can_determine_seed_from_numbers()
-    {
-        $this->beConstructedWith(10055);
-        $this->seed()->shouldReturn(55);
+        $this->beConstructedWith($inputValue);
+        $this->seed()->shouldReturn($expectedValue);
     }
 
-    function it_can_determine_seed_from_negative_numbers()
+    public function seedConversionExamples()
     {
-        $this->beConstructedWith(-10055);
-        $this->seed()->shouldReturn(55);
+        return [
+            ["1234à", 84],
+            ["1234è", 88],
+            ["foo", 26],
+            [10055, 55],
+            [-10055, 55],
+            [1.1, 84],
+            [1.2, 26],
+        ];
     }
 }
diff --git a/src/Seed.php b/src/Seed.php
index 23bc10b..aaf881f 100644
--- a/src/Seed.php
+++ b/src/Seed.php
@@ -38,10 +38,11 @@ public function seed()
      *
      * @return int
      */
-    private function fromString($seed)
+    private function fromScalar($seed)
     {
         $total = 0;
-        foreach (str_split($seed) as $char) {
+        $hash  = md5((string) $seed);
+        foreach (str_split($hash) as $char) {
             $total += ord($char);
         }
 
@@ -55,7 +56,7 @@ private function fromString($seed)
      */
     private function fromNumber($seed)
     {
-        return abs((int) $seed) % 100;
+        return abs($seed) % 100;
     }
 
     /**
@@ -65,14 +66,14 @@ private function fromNumber($seed)
      */
     private function calculateSeed($seed)
     {
-        if (is_numeric($seed)) {
+        if (is_int($seed)) {
             return $this->fromNumber($seed);
         }
 
-        if (is_string($seed)) {
-            return $this->fromString($seed);
+        if (is_scalar($seed) && !is_bool($seed)) {
+            return $this->fromScalar($seed);
         }
 
-        throw new InvalidArgumentException("The seed has to be either a string or and integer");
+        throw new InvalidArgumentException("The seed has to be either a string or a number");
     }
 }