Abstract: A system for monitoring locations of each of a population of wandering devices, each having localizing functionality, the system comprising a tracking functionality operative for monitoring locations of each of the population of wandering devices and accordingly, providing location information which characterizes individual wandering devices from among said population, via a viewing functionality, to corresponding end-users registered in respective association with the wandering devices; and an interface with the wandering devices operative to command that location information regarding at least one individual wandering device be transmitted to the tracking functionality more frequently if at least one individual end-user registered in respective association with the individual wandering device is logged onto a viewing functionality and less frequently if no end-user registered in respective association with the individual wandering device is logged onto the viewing functionality.