Lenovo T1 is the revolutionary keyless entry for your home. It is easily installed to your current existing deadbolt and ensures full security protection with the tough metal frame body. T1 has a handle that magically extends out with a glowing light once unlocked and user can push to open the door smoothly. The rounded loop design is friendly and smart approach to this new technology. On the inside, the handle has censors that automatically unlocks when user comes close to the door.T1 also comes with child safety features. This is truly the smartlock of the future.