In the past few years, we have covered plenty of smart door locks here. The Keymitt Lock simply turns your existing door lock smart. It attaches on top of it from the inside and works with deadbolts, euro cylinder and mortise door locks. It connects to your phone for gesture control and auto lock functionality.
The Keymitt lock has AES 256-bit encryption. Its companion app allows you to add/remove people to/from your access list, set up notifications, and view a recent history of entries. The Keymitt app is compatible with iOS/Android devices.[where to get it]