Get alerts when someone locks or unlocks the door or tries to tamper with your smart door lock [1]. Check the status of your door lock from anywhere and lock it with the Nest app; or use one-touch locking on your way out, or a passcode on the keypad lock; with auto-lock, it can lock automatically when you're away from home [1]. Works with the Nest Hello video doorbell and Nest Cams to help keep your front door secure.