3-in-1 Triple Security: combines the HD camera, sophisticated video doorbell notifications, and fast fingerprint recognition of Smart Lock into a single device. 5 SIMPLE METHODS TO UNLOCK: The ultra-thin fingerprint film and sophisticated chip identify you in 0.3 seconds and unlock your door in 1 second. Additionally, you can use the Eufy Security app, Google Voice Assistant, Alexa, or your keyboard and keys to control Smart Lock. Remote Management From Any Location: The Eufy Security app allows you to control your lock and see who is at your front door from anywhere. Thumbnails are cached in the cloud. The fully rechargeable battery is one large battery that can do it all. With a 10,000mAh capacity, you won't ever have to worry about Smart