RadioStoryCards uses RFID tags attached to plastic pockets that hold your physical story cards (we use index cards).
On the screen in this picture, you can see the RFID Tag ID, along with the JIRA issue that it's linked to, the state it's in (Doing) and when it entered that state.
In the lower-right, you can see the red RedBee RFID reader (one of two that is currently supported) and leaning against the screen, you can see the plastic pocket containing the round black RFID Tag and the index card (sorry, had to hide the contents of the index card in this picture).
