This Google Home and Alexa-enabled smart lock uses a 3D fingerprint sensor along with algorithm-based passcode tech to prevent people from breaking in to your home and allows multi-user access. The digits on the passcode screen display are randomly reshuffled each time you enter your passcode so people can’t easily guess or memorize your passcode. The lock comes in a latch and deadbolt version. You can also unlock the deadbolt using the Lockly app. And you can unlock with Alexa. We especially like that the 3D sensor makes a nice backup should the proximity sensor stop working.