Today I discovered the obvious. You can not only control robots with the EZ-B but you can control any peripherals compatable with it. There a so many different possibilities, varying from simple to complex. So I have set out to create a simple voice activated door lock. I am still in the planning stages and I hope I will be successful. Here is the link.
The key will first rotate to lock or unlock the door. The pinion will then rotate moving the servo back. This whole mechanism is contained within a metal box which can be slid across to reveal the door knob.