Sesame replaces your keys with your phone in seconds. It also fits on your lock in seconds, without removing or swapping anything. Leave your keys behind: Just lock and unlock your door using the Sesame app on your phone. Better yet, open Sesame with a custom knock on your phone or door. Your keys, reinvented. Share access: Allow guests in no matter where you are. Control who has access and when. Log records: Receive a notification whenever your door opens or closes. Installs in seconds: Simply tape Sesame to your door with a single strip of 3M Command tape (supplied). It fits your lock without removing or swapping anything. No tools required. Fits all deadbolts: Sesame works with just about any deadbolt in the USA / Canada / Australia thanks to five-patented self-adjusting mechanisms.Long battery life: Sesame lasts about 500 days on lithium batteries (supplied), and sends a notification when the batteries are low.