These systems can be used, for example, for imposing all sorts of traffic fees and thus also for traffic pricing. In case of road traffic it is, for example, possible to charge for all distances traveled and to relate the fee for each distance unit traveled, if desired, to the place where and/or to the date, the point of time and/or the traffic density when that distance unit was traveled, to the brand, model, year of make,  transmission-type and engine-type of the vehicle used, to the chosen gear, the number of revolutions, the fuel consumption, the noise production, the speed and/or speed changes used for traveling the distance unit with that vehicle, and/or to the environmental pollution caused. Reducing noise hindrance by aircraft is another example of a possible application.
 

Keywords: privacy protection, tracing, fraud resistance, verification, identification, semi-identification, agent, hunter, intermediary, odometer reading, toll, traffic tax, traffic fee, traffic pricing, proportionate pricing, kilometer tax, congestion pricing, road pricing, pollution pricing, environmental pollution, fuel consumption, noise hindrance, traffic queue information, cruise control, automatic calibration, rolling tester, taximeter, tachograph, black box.