diff --git a/packages/code-provider-twilio/README.md b/packages/code-provider-twilio/README.md
new file mode 100644
index 000000000..ad02388fd
--- /dev/null
+++ b/packages/code-provider-twilio/README.md
@@ -0,0 +1,35 @@
+# @accounts/code-provider-twilio
+
+## Install
+
+```
+yarn add @accounts/code-provider-twilio
+```
+
+## Usage
+
+```js
+import { AccountsServer } from '@accounts/server';
+import { AccountsCode } from '@accounts/code';
+import { CodeProviderTwilio } from '@accounts/code-provider-twilio';
+
+const codeProvider = new CodeProviderTwilio({
+  sid: 'TWILIO_SID',
+  secret: 'TWILIO_SECRET',
+  phoneNumber: 'TWILIO_FROM_PHONE_NUMBER',
+});
+
+export const accountsCode = new AccountsCode({
+  codeProvider,
+  // options
+});
+
+const accountsServer = new AccountsServer(
+  {
+    // options
+  },
+  {
+    code: accountsCode,
+  }
+);
+```
diff --git a/packages/code-provider-twilio/package.json b/packages/code-provider-twilio/package.json
new file mode 100644
index 000000000..4cf2ca69c
--- /dev/null
+++ b/packages/code-provider-twilio/package.json
@@ -0,0 +1,27 @@
+{
+  "name": "@accounts/code-provider-twilio",
+  "version": "0.19.0",
+  "license": "MIT",
+  "main": "lib/index.js",
+  "typings": "lib/index.d.ts",
+  "scripts": {
+    "clean": "rimraf lib",
+    "start": "tsc --watch",
+    "precompile": "yarn clean",
+    "compile": "tsc",
+    "prepublishOnly": "yarn compile"
+  },
+  "jest": {
+    "testEnvironment": "node",
+    "preset": "ts-jest"
+  },
+  "dependencies": {
+    "twilio": "^3.33.3"
+  },
+  "devDependencies": {
+    "@accounts/code": "^0.19.0"
+  },
+  "peerDependencies": {
+    "@accounts/code": "^0.19.0"
+  }
+}
diff --git a/packages/code-provider-twilio/src/code-provider-twilio.ts b/packages/code-provider-twilio/src/code-provider-twilio.ts
new file mode 100644
index 000000000..c39ad7b1b
--- /dev/null
+++ b/packages/code-provider-twilio/src/code-provider-twilio.ts
@@ -0,0 +1,50 @@
+import { Twilio } from 'twilio';
+
+import { CodeProvider } from '@accounts/code';
+
+export type MessageCreator = (code: string) => string;
+
+export interface TwilioSmsCodeProviderOptions {
+  sid: string;
+  secret: string;
+  phoneNumber?: string;
+  messagingServiceSid?: string;
+  messageCreator?: MessageCreator;
+}
+
+export default class TwilioSmsCodeProvider implements CodeProvider {
+  private messageCreator: MessageCreator;
+  private phoneNumber?: string;
+  private messagingServiceSid?: string;
+  private twilio: Twilio;
+
+  constructor({
+    sid,
+    secret,
+    phoneNumber,
+    messagingServiceSid,
+    messageCreator = code => `This is your authentication code: ${code}`,
+  }: TwilioSmsCodeProviderOptions) {
+    this.twilio = new Twilio(sid, secret);
+    this.phoneNumber = phoneNumber;
+    this.messagingServiceSid = messagingServiceSid;
+    this.messageCreator = messageCreator;
+  }
+
+  public async sendToClient(serviceId: string, code: string): Promise<void> {
+    const options: any = {
+      body: this.messageCreator(code),
+      to: serviceId,
+    };
+
+    if (this.phoneNumber) {
+      options.from = this.phoneNumber;
+    } else if (this.messagingServiceSid) {
+      options.messagingServiceSid = this.messagingServiceSid;
+    } else {
+      throw new Error('Not enough twilio credentials');
+    }
+
+    await this.twilio.messages.create(options);
+  }
+}
diff --git a/packages/code-provider-twilio/src/index.ts b/packages/code-provider-twilio/src/index.ts
new file mode 100644
index 000000000..c5e82924f
--- /dev/null
+++ b/packages/code-provider-twilio/src/index.ts
@@ -0,0 +1,4 @@
+import CodeProviderTwilio from './code-provider-twilio';
+
+export default CodeProviderTwilio;
+export { CodeProviderTwilio };
diff --git a/packages/code-provider-twilio/tsconfig.json b/packages/code-provider-twilio/tsconfig.json
new file mode 100644
index 000000000..4ec56d0f8
--- /dev/null
+++ b/packages/code-provider-twilio/tsconfig.json
@@ -0,0 +1,9 @@
+{
+  "extends": "../../tsconfig",
+  "compilerOptions": {
+    "rootDir": "./src",
+    "outDir": "./lib",
+    "importHelpers": true
+  },
+  "exclude": ["node_modules", "__tests__", "lib"]
+}
diff --git a/packages/code/README.md b/packages/code/README.md
new file mode 100644
index 000000000..4a7bb4e63
--- /dev/null
+++ b/packages/code/README.md
@@ -0,0 +1,30 @@
+# @accounts/code
+
+## Install
+
+```
+yarn add @accounts/code
+```
+
+## Usage
+
+```js
+import { AccountsServer } from '@accounts/server';
+import { AccountsCode } from '@accounts/code';
+
+const codeProvider = '...';
+
+export const accountsCode = new AccountsCode({
+  codeProvider,
+  // options
+});
+
+const accountsServer = new AccountsServer(
+  {
+    // options
+  },
+  {
+    code: accountsCode,
+  }
+);
+```
diff --git a/packages/code/__tests__/accounts-code.ts b/packages/code/__tests__/accounts-code.ts
new file mode 100644
index 000000000..1916d10e0
--- /dev/null
+++ b/packages/code/__tests__/accounts-code.ts
@@ -0,0 +1,195 @@
+import { AccountsCode, CodeProvider, ErrorMessages } from '../src';
+
+function createCodeProvider(success: boolean): CodeProvider {
+  return {
+    sendToClient: jest.fn(() => (success ? Promise.resolve() : Promise.reject())),
+  };
+}
+
+const errors: ErrorMessages = {
+  userNotFound: '0',
+  codeExpired: '1',
+  codeWasNotFound: '2',
+  wrongCode: '3',
+  failedToProvideCode: '4',
+};
+
+describe('AccountsCode', () => {
+  describe('preparation', () => {
+    it('throws error when no user is found', async () => {
+      const code = new AccountsCode({ codeProvider: createCodeProvider(true), errors });
+      const findUserByServiceId = jest.fn(() => Promise.resolve());
+      code.setStore({ findUserByServiceId } as any);
+
+      try {
+        await code.prepareAuthentication('1234');
+      } catch (e) {
+        expect(e.message).toEqual(errors.userNotFound);
+      }
+
+      expect.assertions(1);
+    });
+
+    it('throws error when failed to send code to the client', async () => {
+      const code = new AccountsCode({ codeProvider: createCodeProvider(false), errors });
+
+      const user = {
+        id: '123',
+      };
+
+      const findUserByServiceId = jest.fn(() => Promise.resolve(user));
+      const setService = jest.fn(() => Promise.resolve());
+      code.setStore({ findUserByServiceId, setService } as any);
+
+      try {
+        await code.prepareAuthentication('1234');
+      } catch (e) {
+        expect(e.message).toEqual(errors.failedToProvideCode);
+      }
+
+      expect.assertions(1);
+    });
+
+    it('completes successfully', async () => {
+      const code = new AccountsCode({ codeProvider: createCodeProvider(true), errors });
+
+      const user = {
+        id: '123',
+      };
+
+      const findUserByServiceId = jest.fn(() => Promise.resolve(user));
+      const setService = jest.fn(() => Promise.resolve());
+      code.setStore({ findUserByServiceId, setService } as any);
+
+      const res = await code.prepareAuthentication('1234');
+
+      expect(res).toBeUndefined();
+      expect(setService).toHaveBeenCalledTimes(1);
+      expect(setService).toHaveBeenCalledWith('123', code.serviceName, {
+        id: '1234',
+        code: expect.any(String),
+        expiry: expect.any(Number),
+      });
+    });
+  });
+
+  describe('Authentication', () => {
+    const code = new AccountsCode({ codeProvider: createCodeProvider(true), errors });
+
+    it('throws error when no user is found', async () => {
+      const findUserByServiceId = jest.fn(() => Promise.resolve(null));
+      code.setStore({ findUserByServiceId } as any);
+
+      try {
+        await code.authenticate({ serviceId: '1234', code: '2233' });
+      } catch (e) {
+        expect(e.message).toEqual(errors.userNotFound);
+      }
+
+      expect.assertions(1);
+    });
+
+    it('throws error when no code is found', async () => {
+      const findUserByServiceId = jest.fn(() =>
+        Promise.resolve({
+          id: '123',
+        })
+      );
+      code.setStore({ findUserByServiceId } as any);
+
+      try {
+        await code.authenticate({ serviceId: '1234', code: '2233' });
+      } catch (e) {
+        expect(e.message).toEqual(errors.codeWasNotFound);
+      }
+
+      expect.assertions(1);
+    });
+
+    it('throws error when no code is found 2', async () => {
+      const findUserByServiceId = jest.fn(() =>
+        Promise.resolve({
+          id: '123',
+          services: {
+            [code.serviceName]: {},
+          },
+        })
+      );
+      code.setStore({ findUserByServiceId } as any);
+
+      try {
+        await code.authenticate({ serviceId: '1234', code: '2233' });
+      } catch (e) {
+        expect(e.message).toEqual(errors.codeWasNotFound);
+      }
+
+      expect.assertions(1);
+    });
+
+    it('throws error when code is wrong', async () => {
+      const findUserByServiceId = jest.fn(() =>
+        Promise.resolve({
+          id: '123',
+          services: {
+            [code.serviceName]: {
+              code: '1111',
+            },
+          },
+        })
+      );
+      code.setStore({ findUserByServiceId } as any);
+
+      try {
+        await code.authenticate({ serviceId: '1234', code: '2233' });
+      } catch (e) {
+        expect(e.message).toEqual(errors.wrongCode);
+      }
+
+      expect.assertions(1);
+    });
+
+    it('throws error when code is expired', async () => {
+      const findUserByServiceId = jest.fn(() =>
+        Promise.resolve({
+          id: '123',
+          services: {
+            [code.serviceName]: {
+              code: 'vKw3G1T1mUWhSqSeLkCOXW5NvFk4f12M/GsBXUDVuwI=',
+              expiry: Date.now() - 10000,
+            },
+          },
+        })
+      );
+      code.setStore({ findUserByServiceId } as any);
+
+      try {
+        await code.authenticate({ serviceId: '1234', code: '2233' });
+      } catch (e) {
+        expect(e.message).toEqual(errors.codeExpired);
+      }
+
+      expect.assertions(1);
+    });
+
+    it('authenticates successfully and returns user', async () => {
+      const user = {
+        id: '123',
+        services: {
+          [code.serviceName]: {
+            code: 'vKw3G1T1mUWhSqSeLkCOXW5NvFk4f12M/GsBXUDVuwI=',
+            expiry: Date.now() + 10000,
+          },
+        },
+      };
+      const findUserByServiceId = jest.fn(() => Promise.resolve(user));
+      const setService = jest.fn(() => Promise.resolve());
+      code.setStore({ findUserByServiceId, setService } as any);
+
+      const res = await code.authenticate({ serviceId: '1234', code: '2233' });
+
+      expect(res).toEqual(user);
+      expect(setService).toHaveBeenCalledTimes(1);
+      expect(setService).toHaveBeenCalledWith('123', code.serviceName, { id: '1234' });
+    });
+  });
+});
diff --git a/packages/code/package.json b/packages/code/package.json
new file mode 100644
index 000000000..ec779b6d7
--- /dev/null
+++ b/packages/code/package.json
@@ -0,0 +1,36 @@
+{
+  "name": "@accounts/code",
+  "version": "0.19.0",
+  "license": "MIT",
+  "main": "lib/index.js",
+  "typings": "lib/index.d.ts",
+  "scripts": {
+    "clean": "rimraf lib",
+    "start": "tsc --watch",
+    "precompile": "yarn clean",
+    "compile": "tsc",
+    "prepublishOnly": "yarn compile",
+    "testonly": "jest --coverage",
+    "coverage": "jest --coverage"
+  },
+  "jest": {
+    "testEnvironment": "node",
+    "preset": "ts-jest"
+  },
+  "dependencies": {
+    "@accounts/types": "^0.19.0",
+    "lodash": "^4.17.15",
+    "randomstring": "^1.1.5",
+    "tslib": "1.10.0"
+  },
+  "devDependencies": {
+    "@accounts/server": "^0.19.0",
+    "@types/randomstring": "^1.1.6",
+    "@types/jest": "24.0.16",
+    "jest": "24.8.0",
+    "rimraf": "2.6.3"
+  },
+  "peerDependencies": {
+    "@accounts/server": "^0.19.0"
+  }
+}
diff --git a/packages/code/src/accounts-code.ts b/packages/code/src/accounts-code.ts
new file mode 100644
index 000000000..db2bb4611
--- /dev/null
+++ b/packages/code/src/accounts-code.ts
@@ -0,0 +1,108 @@
+import { AuthenticationService, DatabaseInterface, User } from '@accounts/types';
+import { AccountsServer } from '@accounts/server';
+
+import { CodeGenerator, CodeProvider, CodeHash, ErrorMessages, CodeLoginType } from './types';
+import SimpleCodeHash from './utils/simple-code-hash';
+import RandomstringCodeGenerator from './utils/randomstring-code-generator';
+import { errors } from './errors';
+
+const DEFAULT_EXPIRY = 20 * 60 * 1000; // 20 minutes in milliseconds
+
+export interface AccountsCodeOptions {
+  codeGenerator?: CodeGenerator;
+  codeProvider: CodeProvider;
+  codeHash?: CodeHash;
+  expiry?: number;
+  errors?: ErrorMessages;
+}
+
+interface DBService {
+  id: string;
+  code?: string;
+  expiry?: number;
+}
+
+const defaultOptions = {
+  codeGenerator: new RandomstringCodeGenerator({ length: 4, charset: 'numeric' }),
+  codeHash: new SimpleCodeHash() as CodeHash,
+  expiry: DEFAULT_EXPIRY,
+  errors,
+};
+
+export default class CodeService implements AuthenticationService {
+  public serviceName = 'code';
+  public server!: AccountsServer;
+  private db!: DatabaseInterface;
+  private options: AccountsCodeOptions & typeof defaultOptions;
+
+  constructor(options: AccountsCodeOptions) {
+    this.options = { ...defaultOptions, ...options };
+  }
+
+  public setStore(store: DatabaseInterface) {
+    this.db = store;
+  }
+
+  public async updateUserServiceId(userId: string, serviceId: string): Promise<void> {
+    const dbService: DBService = {
+      id: serviceId,
+    };
+
+    await this.db.setService(userId, this.serviceName, dbService);
+  }
+
+  public async prepareAuthentication(serviceId: string) {
+    const user = await this.db.findUserByServiceId(this.serviceName, serviceId);
+
+    if (!user) {
+      throw new Error(this.options.errors.userNotFound);
+    }
+
+    const newCode = await this.options.codeGenerator.generate();
+    const hashedCode = this.options.codeHash.hash(newCode);
+
+    const dbService: DBService = {
+      id: serviceId,
+      code: hashedCode,
+      expiry: Date.now() + this.options.expiry,
+    };
+
+    await this.db.setService(user.id, this.serviceName, dbService);
+
+    try {
+      await this.options.codeProvider.sendToClient(serviceId, newCode);
+    } catch (e) {
+      throw new Error(this.options.errors.failedToProvideCode);
+    }
+  }
+
+  public async authenticate({ serviceId, code }: CodeLoginType): Promise<User> {
+    const user = await this.db.findUserByServiceId(this.serviceName, serviceId);
+
+    if (!user) {
+      throw new Error(this.options.errors.userNotFound);
+    }
+
+    if (!user.services || !(user.services as any)[this.serviceName]) {
+      throw new Error(this.options.errors.codeWasNotFound);
+    }
+
+    const { code: serviceCode, expiry }: DBService = (user.services as any)[this.serviceName];
+
+    if (!serviceCode) {
+      throw new Error(this.options.errors.codeWasNotFound);
+    }
+
+    if (!this.options.codeHash.verify(code, serviceCode)) {
+      throw new Error(this.options.errors.wrongCode);
+    }
+
+    if (expiry && expiry < Date.now()) {
+      throw new Error(this.options.errors.codeExpired);
+    }
+
+    await this.db.setService(user.id, this.serviceName, { id: serviceId });
+
+    return user;
+  }
+}
diff --git a/packages/code/src/errors.ts b/packages/code/src/errors.ts
new file mode 100644
index 000000000..6d615253a
--- /dev/null
+++ b/packages/code/src/errors.ts
@@ -0,0 +1,9 @@
+import { ErrorMessages } from './types';
+
+export const errors: ErrorMessages = {
+  userNotFound: 'User not found',
+  codeExpired: 'Code is expired',
+  codeWasNotFound: 'Code not found',
+  wrongCode: 'Wrong code',
+  failedToProvideCode: 'Failed to deliver code to the client',
+};
diff --git a/packages/code/src/index.ts b/packages/code/src/index.ts
new file mode 100644
index 000000000..dc09c99ad
--- /dev/null
+++ b/packages/code/src/index.ts
@@ -0,0 +1,5 @@
+import AccountsCode from './accounts-code';
+export * from './types';
+
+export default AccountsCode;
+export { AccountsCode };
diff --git a/packages/code/src/types/code-generator.ts b/packages/code/src/types/code-generator.ts
new file mode 100644
index 000000000..05f807b61
--- /dev/null
+++ b/packages/code/src/types/code-generator.ts
@@ -0,0 +1,3 @@
+export interface CodeGenerator {
+  generate(): Promise<string>;
+}
diff --git a/packages/code/src/types/code-hash.ts b/packages/code/src/types/code-hash.ts
new file mode 100644
index 000000000..ebd264d2d
--- /dev/null
+++ b/packages/code/src/types/code-hash.ts
@@ -0,0 +1,5 @@
+export interface CodeHash {
+  hash(code: string): string;
+
+  verify(code: string, hash: string): boolean;
+}
diff --git a/packages/code/src/types/code-login-type.ts b/packages/code/src/types/code-login-type.ts
new file mode 100644
index 000000000..4b194c893
--- /dev/null
+++ b/packages/code/src/types/code-login-type.ts
@@ -0,0 +1,4 @@
+export interface CodeLoginType {
+  serviceId: string;
+  code: string;
+}
diff --git a/packages/code/src/types/code-provider.ts b/packages/code/src/types/code-provider.ts
new file mode 100644
index 000000000..6bec16b3d
--- /dev/null
+++ b/packages/code/src/types/code-provider.ts
@@ -0,0 +1,3 @@
+export interface CodeProvider {
+  sendToClient(serviceId: string, code: string): Promise<void>;
+}
diff --git a/packages/code/src/types/error-messages.ts b/packages/code/src/types/error-messages.ts
new file mode 100644
index 000000000..4bcb6b892
--- /dev/null
+++ b/packages/code/src/types/error-messages.ts
@@ -0,0 +1,7 @@
+export interface ErrorMessages {
+  userNotFound: string;
+  codeWasNotFound: string;
+  wrongCode: string;
+  codeExpired: string;
+  failedToProvideCode: string;
+}
diff --git a/packages/code/src/types/index.ts b/packages/code/src/types/index.ts
new file mode 100644
index 000000000..6de31d741
--- /dev/null
+++ b/packages/code/src/types/index.ts
@@ -0,0 +1,5 @@
+export { ErrorMessages } from './error-messages';
+export { CodeGenerator } from './code-generator';
+export { CodeProvider } from './code-provider';
+export { CodeHash } from './code-hash';
+export { CodeLoginType } from './code-login-type';
diff --git a/packages/code/src/utils/randomstring-code-generator.ts b/packages/code/src/utils/randomstring-code-generator.ts
new file mode 100644
index 000000000..b9e97a27a
--- /dev/null
+++ b/packages/code/src/utils/randomstring-code-generator.ts
@@ -0,0 +1,17 @@
+import * as randomstring from 'randomstring';
+
+import { CodeGenerator } from '../types';
+
+export type RandomstringOptions = randomstring.GenerateOptions;
+
+export default class RandomstringCodeGenerator implements CodeGenerator {
+  private options?: RandomstringOptions;
+
+  constructor(options?: RandomstringOptions) {
+    this.options = options;
+  }
+
+  public async generate(): Promise<string> {
+    return randomstring.generate(this.options);
+  }
+}
diff --git a/packages/code/src/utils/simple-code-hash.ts b/packages/code/src/utils/simple-code-hash.ts
new file mode 100644
index 000000000..e9a83750b
--- /dev/null
+++ b/packages/code/src/utils/simple-code-hash.ts
@@ -0,0 +1,22 @@
+import * as crypto from 'crypto';
+
+import { CodeHash } from '../types';
+
+export default class SimpleCodeHash implements CodeHash {
+  public hash(code: string): string {
+    return this._hash(code);
+  }
+
+  public verify(code: string, hash: string): boolean {
+    const hashedCode = this._hash(code);
+
+    return hashedCode === hash;
+  }
+
+  private _hash(code: string): string {
+    const hash = crypto.createHash('sha256');
+    hash.update(code);
+
+    return hash.digest('base64');
+  }
+}
diff --git a/packages/code/tsconfig.json b/packages/code/tsconfig.json
new file mode 100644
index 000000000..4ec56d0f8
--- /dev/null
+++ b/packages/code/tsconfig.json
@@ -0,0 +1,9 @@
+{
+  "extends": "../../tsconfig",
+  "compilerOptions": {
+    "rootDir": "./src",
+    "outDir": "./lib",
+    "importHelpers": true
+  },
+  "exclude": ["node_modules", "__tests__", "lib"]
+}
diff --git a/website/docs/strategies/code.md b/website/docs/strategies/code.md
new file mode 100644
index 000000000..ecc69c79a
--- /dev/null
+++ b/website/docs/strategies/code.md
@@ -0,0 +1,81 @@
+---
+title: Code
+---
+
+[Github](https://github.com/accounts-js/accounts/tree/master/packages/code) |
+[npm](https://www.npmjs.com/package/@accounts/code)
+
+The `@accounts/code` package provide a secure system for a code based login strategy. The code is being created prior to the login request and sent to the client via a provider (SMS provider for example)
+
+## Install
+
+```
+# With yarn
+yarn add @accounts/code
+
+# Or if you use npm
+npm install @accounts/code --save
+```
+
+A provider is also needed. You can use `accounts` providers or create your own.
+
+## Usage
+
+```javascript
+import AccountsServer from '@accounts/server';
+import AccountsCode from '@accounts/code';
+
+// We create a new code instance with a code provider and extra configuration
+const accountsCode = new AccountsCode(provider, ...config);
+
+// We pass the code instance the AccountsServer service list
+const accountsServer = new AccountsServer(...config, {
+  code: accountsCode,
+});
+```
+
+## Providers
+
+### twilio
+
+#### Install
+
+```
+# With yarn
+yarn add @accounts/code-provider-twilio
+
+# Or if you use npm
+npm install @accounts/code-provider-twilio --save
+```
+
+#### Usage
+
+```js
+import { AccountsServer } from '@accounts/server';
+import { AccountsCode } from '@accounts/code';
+import { CodeProviderTwilio } from '@accounts/code-provider-twilio';
+
+const codeProvider = new CodeProviderTwilio({
+  sid: 'TWILIO_SID',
+  secret: 'TWILIO_SECRET',
+  phoneNumber: 'TWILIO_FROM_PHONE_NUMBER',
+});
+
+export const accountsCode = new AccountsCode({
+  codeProvider,
+  // options
+});
+
+const accountsServer = new AccountsServer(
+  {
+    // options
+  },
+  {
+    code: accountsCode,
+  }
+);
+```
+
+## Create a custom provider
+
+In order to create a custom code provider you need to implement the `CodeProvider` interface from `@accounts/code`.
diff --git a/yarn.lock b/yarn.lock
index fd94449ba..b54721c21 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2274,7 +2274,7 @@
     "@types/express" "*"
     "@types/node" "*"
 
-"@types/express@*", "@types/express@4.17.1":
+"@types/express@*", "@types/express@4.17.1", "@types/express@^4.16.1":
   version "4.17.1"
   resolved "https://registry.yarnpkg.com/@types/express/-/express-4.17.1.tgz#4cf7849ae3b47125a567dfee18bfca4254b88c5c"
   integrity sha512-VfH/XCP0QbQk5B5puLqTLEeFgR8lfCJHZJKkInZ9mkYd+u8byX0kztXEQxEk4wZXJs8HI+7km2ALXjn4YKcX9w==
@@ -2356,6 +2356,13 @@
   resolved "https://registry.yarnpkg.com/@types/jest-diff/-/jest-diff-20.0.1.tgz#35cc15b9c4f30a18ef21852e255fdb02f6d59b89"
   integrity sha512-yALhelO3i0hqZwhjtcr6dYyaLoCHbAMshwtj6cGxTvHZAKXHsYGdff6E8EPw3xLKY0ELUTQ69Q1rQiJENnccMA==
 
+"@types/jest@24.0.16":
+  version "24.0.16"
+  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-24.0.16.tgz#8d3e406ec0f0dc1688d6711af3062ff9bd428066"
+  integrity sha512-JrAiyV+PPGKZzw6uxbI761cHZ0G7QMOHXPhtSpcl08rZH6CswXaaejckn3goFKmF7M3nzEoJ0lwYCbqLMmjziQ==
+  dependencies:
+    "@types/jest-diff" "*"
+
 "@types/jest@24.0.18":
   version "24.0.18"
   resolved "https://registry.yarnpkg.com/@types/jest/-/jest-24.0.18.tgz#9c7858d450c59e2164a8a9df0905fc5091944498"
@@ -2404,6 +2411,11 @@
     "@types/koa-compose" "*"
     "@types/node" "*"
 
+"@types/lodash@4.14.136":
+  version "4.14.136"
+  resolved "https://registry.yarnpkg.com/@types/lodash/-/lodash-4.14.136.tgz#413e85089046b865d960c9ff1d400e04c31ab60f"
+  integrity sha512-0GJhzBdvsW2RUccNHOBkabI8HZVdOXmXbXhuKlDEd5Vv12P7oAVGfomGp3Ne21o5D/qu1WmthlNKFaoZJJeErA==
+
 "@types/lodash@4.14.138", "@types/lodash@^4.14.138":
   version "4.14.138"
   resolved "https://registry.yarnpkg.com/@types/lodash/-/lodash-4.14.138.tgz#34f52640d7358230308344e579c15b378d91989e"
@@ -2432,6 +2444,14 @@
     "@types/bson" "*"
     "@types/node" "*"
 
+"@types/mongoose@5.5.11":
+  version "5.5.11"
+  resolved "https://registry.yarnpkg.com/@types/mongoose/-/mongoose-5.5.11.tgz#8562bb84b4f3f41aebec27f263607bfe2183729e"
+  integrity sha512-Z1W2V3zrB+SeDGI6G1G5XR3JJkkMl4ni7a2Kmq10abdY0wapbaTtUT2/31N+UTPEzhB0KPXUgtQExeKxrc+hxQ==
+  dependencies:
+    "@types/mongodb" "*"
+    "@types/node" "*"
+
 "@types/mongoose@5.5.17":
   version "5.5.17"
   resolved "https://registry.yarnpkg.com/@types/mongoose/-/mongoose-5.5.17.tgz#1f8eb3799368ae266758d2df1bd1a7cfca0f6875"
@@ -2486,6 +2506,11 @@
   dependencies:
     "@types/react" "*"
 
+"@types/randomstring@^1.1.6":
+  version "1.1.6"
+  resolved "https://registry.yarnpkg.com/@types/randomstring/-/randomstring-1.1.6.tgz#45cdc060a6f043d610bcd46503a6887db2a209c3"
+  integrity sha512-XRIZIMTxjcUukqQcYBdpFWGbcRDyNBXrvTEtTYgFMIbBNUVt+9mCKsU+jUUDLeFO/RXopUgR5OLiBqbY18vSHQ==
+
 "@types/range-parser@*":
   version "1.2.3"
   resolved "https://registry.yarnpkg.com/@types/range-parser/-/range-parser-1.2.3.tgz#7ee330ba7caafb98090bece86a5ee44115904c2c"
@@ -3500,6 +3525,11 @@ array-union@^2.1.0:
   resolved "https://registry.yarnpkg.com/array-union/-/array-union-2.1.0.tgz#b798420adbeb1de828d84acd8a2e23d3efe85e8d"
   integrity sha512-HGyxoOTYUyCM6stUe6EJgnd4EoewAI7zMdfqO+kGjnlZmBDz/cR5pf8r/cR4Wq60sL/p0IkcjUEEPwS3GFrIyw==
 
+array-uniq@1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/array-uniq/-/array-uniq-1.0.2.tgz#5fcc373920775723cfd64d65c64bef53bf9eba6d"
+  integrity sha1-X8w3OSB3VyPP1k1lxkvvU7+eum0=
+
 array-uniq@^1.0.1:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/array-uniq/-/array-uniq-1.0.3.tgz#af6ac877a25cc7f74e058894753858dfdb24fdb6"
@@ -5637,6 +5667,11 @@ depd@~2.0.0:
   resolved "https://registry.yarnpkg.com/depd/-/depd-2.0.0.tgz#b696163cc757560d09cf22cc8fad1571b79e76df"
   integrity sha512-g7nH6P6dyDioJogAAGprGpCtVImJhpPk/roCzdb3fIh61/s/nPsfR6onyMwkCAR/OlC3yBC0lESvUoQEAssIrw==
 
+deprecate@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/deprecate/-/deprecate-1.0.0.tgz#661490ed2428916a6c8883d8834e5646f4e4a4a8"
+  integrity sha1-ZhSQ7SQokWpsiIPYg05WRvTkpKg=
+
 deprecated-decorator@^0.1.6:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/deprecated-decorator/-/deprecated-decorator-0.1.6.tgz#00966317b7a12fe92f3cc831f7583af329b86c37"
@@ -10341,6 +10376,11 @@ modify-values@^1.0.0:
   resolved "https://registry.yarnpkg.com/modify-values/-/modify-values-1.0.1.tgz#b3939fa605546474e3e3e3c63d64bd43b4ee6022"
   integrity sha512-xV2bxeN6F7oYjZWTe/YPAy6MN2M+sL4u/Rlm2AHCIVGfo2p1yGmBHQ6vHehl4bRTZBdHu3TSkWdYgkwpYzAGSw==
 
+moment@^2.24.0:
+  version "2.24.0"
+  resolved "https://registry.yarnpkg.com/moment/-/moment-2.24.0.tgz#0d055d53f5052aa653c9f6eb68bb5d12bf5c2b5b"
+  integrity sha512-bV7f+6l2QigeBBZSM/6yTNq4P2fNpSWj/0e7jQcy87A8e7o2nAfP/34/2ky5Vw4B9S446EtIhodAzkFCcR4dQg==
+
 mongodb-core@3.2.7:
   version "3.2.7"
   resolved "https://registry.yarnpkg.com/mongodb-core/-/mongodb-core-3.2.7.tgz#a8ef1fe764a192c979252dacbc600dc88d77e28f"
@@ -11645,6 +11685,11 @@ pnp-webpack-plugin@1.5.0:
   dependencies:
     ts-pnp "^1.1.2"
 
+pop-iterate@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/pop-iterate/-/pop-iterate-1.0.1.tgz#ceacfdab4abf353d7a0f2aaa2c1fc7b3f9413ba3"
+  integrity sha1-zqz9q0q/NT16DyqqLB/Hs/lBO6M=
+
 popper.js@^1.14.1:
   version "1.15.0"
   resolved "https://registry.yarnpkg.com/popper.js/-/popper.js-1.15.0.tgz#5560b99bbad7647e9faa475c6b8056621f5a4ff2"
@@ -12581,6 +12626,15 @@ punycode@^2.1.0, punycode@^2.1.1:
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
   integrity sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==
 
+q@2.0.x:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/q/-/q-2.0.3.tgz#75b8db0255a1a5af82f58c3f3aaa1efec7d0d134"
+  integrity sha1-dbjbAlWhpa+C9Yw/Oqoe/sfQ0TQ=
+  dependencies:
+    asap "^2.0.0"
+    pop-iterate "^1.0.1"
+    weak-map "^1.0.5"
+
 q@^1.1.2, q@^1.5.1:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/q/-/q-1.5.1.tgz#7e32f75b41381291d04611f1bf14109ac00651d7"
@@ -12661,6 +12715,13 @@ randomfill@^1.0.3:
     randombytes "^2.0.5"
     safe-buffer "^5.1.0"
 
+randomstring@^1.1.5:
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/randomstring/-/randomstring-1.1.5.tgz#6df0628f75cbd5932930d9fe3ab4e956a18518c3"
+  integrity sha1-bfBij3XL1ZMpMNn+OrTpVqGFGMM=
+  dependencies:
+    array-uniq "1.0.2"
+
 range-parser@^1.2.1, range-parser@~1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/range-parser/-/range-parser-1.2.1.tgz#3cf37023d199e1c24d1a55b84800c2f3e6468031"
@@ -13460,6 +13521,11 @@ ripemd160@^2.0.0, ripemd160@^2.0.1:
     hash-base "^3.0.0"
     inherits "^2.0.1"
 
+rootpath@0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/rootpath/-/rootpath-0.1.2.tgz#5b379a87dca906e9b91d690a599439bef267ea6b"
+  integrity sha1-Wzeah9ypBum5HWkKWZQ5vvJn6ms=
+
 rsvp@^4.8.4:
   version "4.8.5"
   resolved "https://registry.yarnpkg.com/rsvp/-/rsvp-4.8.5.tgz#c8f155311d167f68f21e168df71ec5b083113734"
@@ -13593,6 +13659,11 @@ schema-utils@^2.0.0, schema-utils@^2.0.1:
     ajv "^6.10.2"
     ajv-keywords "^3.4.1"
 
+scmp@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/scmp/-/scmp-2.0.0.tgz#247110ef22ccf897b13a3f0abddb52782393cd6a"
+  integrity sha1-JHEQ7yLM+JexOj8KvdtSeCOTzWo=
+
 select-hose@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/select-hose/-/select-hose-2.0.0.tgz#625d8658f865af43ec962bfc376a37359a4994ca"
@@ -14810,6 +14881,22 @@ tweetnacl@^0.14.3, tweetnacl@~0.14.0:
   resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64"
   integrity sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=
 
+twilio@^3.33.3:
+  version "3.33.3"
+  resolved "https://registry.yarnpkg.com/twilio/-/twilio-3.33.3.tgz#ad610c19914ba8f9950b672c62eddd69b6349b54"
+  integrity sha512-xw/NjPXJ7JoeDSC1Eq6rkxlRdgJhiLeE8BM2KeI14g9ir5Hb1ui9YKYacqnnv/Hf9ZgLvtz4O/HWXzRItg7kqA==
+  dependencies:
+    "@types/express" "^4.16.1"
+    deprecate "1.0.0"
+    jsonwebtoken "^8.5.1"
+    lodash "^4.17.11"
+    moment "^2.24.0"
+    q "2.0.x"
+    request "^2.88.0"
+    rootpath "0.1.2"
+    scmp "2.0.0"
+    xmlbuilder "9.0.1"
+
 type-check@~0.3.2:
   version "0.3.2"
   resolved "https://registry.yarnpkg.com/type-check/-/type-check-0.3.2.tgz#5884cab512cf1d355e3fb784f30804b2b520db72"
@@ -15262,6 +15349,11 @@ wcwidth@^1.0.0:
   dependencies:
     defaults "^1.0.3"
 
+weak-map@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/weak-map/-/weak-map-1.0.5.tgz#79691584d98607f5070bd3b70a40e6bb22e401eb"
+  integrity sha1-eWkVhNmGB/UHC9O3CkDmuyLkAes=
+
 webidl-conversions@^4.0.2:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-4.0.2.tgz#a855980b1f0b6b359ba1d5d9fb39ae941faa63ad"
@@ -15757,6 +15849,11 @@ xml2js@^0.4.17:
     util.promisify "~1.0.0"
     xmlbuilder "~11.0.0"
 
+xmlbuilder@9.0.1:
+  version "9.0.1"
+  resolved "https://registry.yarnpkg.com/xmlbuilder/-/xmlbuilder-9.0.1.tgz#91cd70897755363eba57c12ddeeab4a341a61f65"
+  integrity sha1-kc1wiXdVNj66V8Et3uq0o0GmH2U=
+
 xmlbuilder@~11.0.0:
   version "11.0.1"
   resolved "https://registry.yarnpkg.com/xmlbuilder/-/xmlbuilder-11.0.1.tgz#be9bae1c8a046e76b31127726347d0ad7002beb3"