Emtek offers the latest in door hardware, including the keyless keypad for your home doors. California Design can install new doors and hardware to enhance your home. http://emtek.com.
The door lock is a marvelous marriage of simplicity and complexity. Both its function (to restrict access to a building or room) and operation (insert key, twist key, open door) are simple. But it’s the complex internal mechanics that allow the lock to work the way it does.
The pins, grooves, and cylinder must all align perfectly with the proper key or the cylinder won’t turn, the bolt won’t throw, and the door won’t open—that’s the whole point. Locks have been around for thousands of years, but the modern pin-tumbler lock was invented by Linus Yale Sr. in 1848. Though the pin-tumbler is certainly pickable by an expert, the basic design has been discouraging burglars to this day. Read more at http://www.popularmechanics.com/home/how-to/a9729/ditch-the-keys-its-time-to-get-a-smart-lock-16200140/