diff --git a/solution/services/telegram_bot/filters/__init__.py b/solution/services/telegram_bot/filters/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/solution/services/telegram_bot/filters/auth.py b/solution/services/telegram_bot/filters/auth.py
new file mode 100644
index 0000000..ef1905a
--- /dev/null
+++ b/solution/services/telegram_bot/filters/auth.py
@@ -0,0 +1,17 @@
+from aiogram.filters import Filter
+from aiogram.fsm.context import FSMContext
+from aiogram.types import Message
+
+
+class AuthenticatedFilter(Filter):
+    def __init__(self) -> None:
+        pass
+
+    async def __call__(
+        self,
+        message: Message,
+        state: FSMContext,
+    ) -> bool:
+        state_data = await state.get_data()
+
+        return bool(state_data.get("authenticated"))