We haven't had anymore luck getting processing to type keys, and the closest we got was finding some pretty good looking code, but we weren't able to get the corresponding code library — so it just wasn't happening!
Now we are using the RFIDs to create generative art using some processing code by the artist Jared Tarbell ...more info here.
Heres a sneak peak...
From looking for RFID ideas I found this, Feds at DefCon Alarmed After RFIDs scanned, basically some Feds getting worried after 5 people were identified by RFIDs on their possession and a webcam captured their image. Still slightly concerning to think it was that simple!