At the finish, data on the card are copied to a computer and a receipt is printed to confirm or deny that the course has been completed correctly. A system has been developed to report these data by amateur radio. When a control card is punched, the reporting transmitter sends its own identifier and the orienteer's identifier and punch time. This is received at a base station, often located at the Finish, where the orienteer's progress on the course can be monitored and displayed to spectators. The RFID and iOrienteering systems work differently. The RFID bands do not store any information but are simply used to record the runner 'dibbing' at the control box, the data being transmitted via the mobile phone data system back to the finish. it allows for instant/active viewing of positions and timings- but mobile reception is needed and this reduces it usability in some areas.  iOrienteering works but using the runners smart phone camera to record control points as they are passed. The information is stored on the phone and uploaded at the end of the run. It is more suitable to permanent courses or simple low key orienteering or navigation events, but can be used widely at low cost for almost any navigation event or challenge   Notable exceptions to the above control point features occur in several orienteering sports.