PhidgetRFID Kit - for reading RFID tags. This kit comes with

• 6 30mm disc RFID Tags
• 2 Credit card sized RFID Tags
• 2 Keyfob RFID Tags
• USB cable

PhidgetRFID has a read range of approximately 3 inches. PhidgetRFID reads RFID tags, a technology used for security and location tracking. Each RFID tag contains a unique code. The PhidgetRFID reader reads these codes and returns them to your application when tags are brought within 10 cm (4") of the reader. The tag does not have to be visible to be read.

What are people building with Phidgets?
737 Flight Simulator ‌ Grouplab Student Project Gallery

Datasheets
Technical Information / Manual (.pdf 391 Kb)
COM API Manual - Windows (.pdf 478 Kb)
C API Manual-Windows/MacOSX/Linux (.pdf 339 Kb)
Action Script API Manual(.pdf 470 Kb)
.Net API Manual (.pdf 579 Kb)
Java Docs(.zip 181 kb)

More information can be found on Phidgets website & fourum