Powered by ultra-wideband, the next generation of smart locks will turn your phone into a key — that you never have to use.

Electronic locks let you lock and unlock your door without a key. Cons: They lack the convenience and extra features of smart models. These models do more than lock doors, offering remote control ...

Currently, if you have a smart door lock, you typically have to tap a button on your iPhone or Apple Watch to unlock it, or physically tap your device against the lock for NFC implementations.