Versatile smartphone compatibility: Lock and unlock the door with the Nest app, without a key Unique passcodes: Give passcodes to family and guests. Set schedules to let them in Keyless deadbolt: It's secure and tamperproof. No lost keys. No picked locks Works with Nest Secure alarm system: Unlock the door, and the alarm disarms automatically Access history: Get alerts when someone locks and unlocks the door Satin nickel finish: Offers a sleek and industrial appearance One-touch locking: Just tap to lock on your way out Auto-lock feature: The door locks automatically when Nest knows you're away