Arm and disarm however you like. Use the Nest app from anywhere, tap Nest Tag on Nest Guard or enter a passcode on the keypad. Get Remind Me alerts. If you forget to arm your alarm, you can get a Remind Me alert on your phone. Open quietly. Press the button on Nest Detect to open a door without setting off the alarm. The house stays armed and the alarm stays quiet. Its easy for everyone. Tap Nest Tag on Nest Guard to arm and disarm. Without a passcode. Put one on your keychain. And give one to someone you trust. Know whats happening at home. With the free Nest app, you can arm and disarm from anywhere. Check in on your home anytime. And if the alarm goes off, youll get a security alert. Look out for doors, windows and rooms. Nest Detect knows when a door or window opens or when theres motion in a room.