For better control of front door locks and who can get in and out—and a permanent solution to the lost-key problem with kids—replace one of your dead bolt locks with electronic keypad entry keyless ...

He’s constructed an Arduino keypad door lock — without using any proper fastening hardware! The entire build is made out of scrap parts he had lying around: some DVD’s, a bit of wood ...

Well, don’t get too excited just yet: The Brinks Electronic Fingerprint/Keypad Deadbolt with Pro-Guard (whew!) door lock ...