The Halo Touch fingerprint smart lock allows you to simply use your unique fingerprint to lock and unlock your door. Halo Touch has Wi-Fi capability built-in that connects directly to your home Wi-Fi network and smartphone for a secure smart home that does not require a third party smart home hub, panel or subscription. This door lock holds up to 100 fingerprints (50 users), so you can give access to your family and friends with their unique fingerprint and manage access through the Weiser app (smart phone and WiFi connection required; not included). You can also lock and check the status of Halo using voice commands with Amazon Alexa and Google Assistant devices (both sold separately). This single cylinder deadbolt can be locked or unlocked by using your fingerprint or key from the outside as well as the turn button from the inside.