About this 3D model
So I've been using this coin sized rfid chip tucked away in my wallet to get me in and out of HeatSync Labs (the hackerspace from which I hail) at random hours of the day. Got tired of that and laser cut this simple little keychain. Just cut glue, insert, then glue. http://hackaday.com/2012/08/09/southwest-tour-heatsync-labs-in-mesa-arizona