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

Locksmiths typically charge a fee to re-key an individual lock, even when ... into the knob hole and depress the knob clip.

Unlike most smart locks, which are generally the ... sensor that will automatically unlock the door when you grip it, saving you from having to turn a knob (though that is also an option.) ...