We have been using locks with keys for so long but keys and combination codes can be lost and are not easy to share. A smart padlock works without key so it uses bluetooth connection to unlock it. Using the companion app you can easily share access to your lock with friends and family. Tracking the padlock is a snap with the builtin gps. And if you’ve more than one lock the app can easily manage all of them, which means no more carrying extra keys or remembering combination codes. There is also a tap code you can use in case you forget to bring your phone or just wanna leave inside you locker. The smart bluetooth connected lock costs around 69$.