# Lock

- [Lock password](/safety-and-control/lock/lock-password.md)
- [Lock a notebook](/safety-and-control/lock/lock-a-notebook.md): This is a Premium feature.
- [Lock the whole app](/safety-and-control/lock/lock-the-whole-app.md): This is a Premium feature.
- [Forget lock password](/safety-and-control/lock/forget-lock-password.md)