Wendong’s Smart Phone Weblog

[RFID Journal]: Nokia Unveils RFID Phone Reader

"The software for the reader is written in the Java programming language."
"The new RFID reader works with the Nokia 5140, a GSM phone that is water resistant and more rugged than a typical cell phone. Users simply slide off their existing Xpress-on cover and slide on the RFID reader. The software needed to run the reader is automatically loaded into the phone and the reader becomes operational."

[Wikipedia]: Radio frequency identification (RFID)
[eWeek]: Tracking the Data With RFID