Why use old fashioned keys when you can use newfangled electronic ... the Pi triggers the door lock using a signal line originally designed to work with an intercom system. If the user isn ...

Opening the 30-year-old unit, he probed a row of screw terminals and identified a 13V supply, ground, and the connection to the buildings’ door lock. He connected the lock terminals to a relay ...

Homeowners are choosing smart locks over electronic locks time and time again ... allow homeowners to remotely lock and ...