We bought a house a little while ago and all the interior doors have those locking doorknobs, where you push them in and twist (twist the other way and pull out to unlock).

As another example, a user could approach a door with a push-button lock and see the correct code to open that lock and the steps to unlock it.

Part 2 can be found here Putting a custom designed electronic lock on your space seems like a geek right of passage. For our latest workspace, we decided to skip the boring numbered keypad and buil… ...