Keyless locks though don't have keys to lose or even a keyhole to pick. The model I chose to install, the Kwikset Obsidian, is an extreme example of this.

The kit comes with a keyless entry module with onboard relays for a clean installation, a pair of two-button remote controls, two door-lock actuators with 15 pounds of pull and built in overload ...

Yale Lock, an ASSA ABLOY company, has been a household name in locks for years. Yes years, going back to 1840. In fact, way back in 1861, they were experimenting with a lock based on a mechanism ...