I'd like every moped/bike/vehicle fitted with silent GPS transponder type thing at factory. Your location, route, signal permanently available but not monitored in any way. Only accessible (turned on) with reasonable grounds if requested electronically by requisite agency. If a crime occurs, turn on the transponder within x radius - or stop suspected shit stirrer on moped and download his last 10 miles/20 minutes etc of whereabouts. It would have to be religiously defended and controlled but if every bike had to have one, and police could easily send a ping to see if bike with x reg number had one still on board without accessing routes / radius first that might be nice idea..basically a tracker for everyone and work things in reverse...so if theft occurred in SW15, look for 3 dots moving in similar direction very close together and bingo...
