Lose your keys. For good. Lock and unlock your home without the hassle of keys by rotating your smartphone and tapping the keyed, or with your 4-8 digit pin code. Forget lending keys; share digital keys with friends and family using the free Yale assure app on your iOS, Android or Samsung gear smartwatch. View access history and battery levels, receive notifications, create pin Codes and more all from your smartphone. The lock is simple to install and even easier to use. The assure lock with Bluetooth can be upgraded with a Yale network module to integrate into most home automation and security systems (including smartphone) so that you can control and monitor the lock from anywhere.