This device works with GPS technologies by acquiring locations of all fixed radar positions and also locations of common mobile radar positions. The databases are available for download via the internet and a USB connection. When the motorcycle is in the radar area and small diode, fixed wherever the owner sees fit, blinks. It acts as a warning to slowdown. Right now it is only available in parts of Europe and is completely legal.
Speed Camera Warning GPS for Motorcycles ! [MotorBiker]
