There is this problem in the Media Lab, that I need my ID to get access to the office space, but a key for my office. Why can't I use my ID for both.
I changed this with a small hack on my office door to give me access to my office with the same MIT-ID.

If you want to build this your self download the zip file.
It contains the part-list, lasercut and arduino files.
If you do some modifications feel free to send them to me. :)

door.zip