The circuit board and programming for this project was all done in school; basically the project was designed to get us designing circuit boards and writing programs for our Yr 11 coursework.  My project is an alarm which incorporates the ID20 RFID reader I bought a while back.  At home I decided to actually put it to use so set about adapting this pre-made casing I ordered from Maplin.
Cutting all the holes for components - RFID reader was a challenge!

Once all the holes were cut the circuit board and components could be fitted
 Container all sealed up and fitted with a long power cable

 Mounted on the wall of my garage and the read switch mounted close to the door,m magnet on it.