diff --git a/src/Bridges/SecurityHttp/CookieIdentity.php b/src/Bridges/SecurityHttp/CookieIdentity.php
new file mode 100644
index 00000000..78931af2
--- /dev/null
+++ b/src/Bridges/SecurityHttp/CookieIdentity.php
@@ -0,0 +1,51 @@
+<?php
+
+/**
+ * This file is part of the Nette Framework (https://nette.org)
+ * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
+ */
+
+declare(strict_types=1);
+
+namespace Nette\Bridges\SecurityHttp;
+
+use Nette;
+use Nette\Security\IIdentity;
+
+
+/**
+ * Identity used by CookieStorage
+ */
+final class CookieIdentity implements IIdentity
+{
+	private const MIN_LENGTH = 13;
+
+	private string $uid;
+
+
+	public function __construct(string $uid)
+	{
+		if (strlen($uid) < self::MIN_LENGTH) {
+			throw new \LogicException('UID is too short.');
+		}
+		$this->uid = $uid;
+	}
+
+
+	public function getId(): string
+	{
+		return $this->uid;
+	}
+
+
+	public function getRoles(): array
+	{
+		throw new Nette\NotSupportedException;
+	}
+
+
+	public function getData(): array
+	{
+		throw new Nette\NotSupportedException;
+	}
+}