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 ...

This new and inexpensive lock provides access via PIN, fingerprint recognition, or physical key, but it doesn't have any type of wireless connectivity.

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