diff --git a/src/Core/Authentication/PassportTrait.php b/src/Core/Authentication/PassportTrait.php
new file mode 100644
index 0000000..b5e617b
--- /dev/null
+++ b/src/Core/Authentication/PassportTrait.php
@@ -0,0 +1,25 @@
+<?php
+/**
+ * Author: SyntaxErrorLineNULL.
+ */
+
+declare(strict_types=1);
+
+namespace SELN\App\Core\Authentication;
+
+use Psr\Http\Message\ServerRequestInterface;
+use SELN\App\Core\Authentication\Passport\Passport;
+
+trait PassportTrait
+{
+    public function authentication(ServerRequestInterface $request): Passport
+    {
+        return $request->getAttribute(Passport::ATTRIBUTE);
+    }
+
+    public function checkAuth(ServerRequestInterface $request): string|int
+    {
+        $identification = $this->authentication($request);
+        return $identification->getAuthId();
+    }
+}
\ No newline at end of file