Developer's DescriptionBy Alfred InternationalA Bluetooth smart door lock with Multiple unlocking methodswhich can be managed and controlled by the smartphone.A Bluetooth smart door lock with Multiple unlocking methodswhich can be managed and controlled by the smartphone.A small upgrade to your door lock,making life so much easier.With Alfred smart lock and your iphone,you can now easily retrofit your door lock for smart access.You can also share Bluetooth and password keys for family and guests.