Electronic tagging is a form of non-surreptitious surveillance consisting of an electronic device attached to a person or vehicle, especially certain criminals, allowing their whereabouts to be monitored. In general, devices locate themselves using GPS and report their position back to a control centre, for example via a cellular (mobile) phone ne... Found on http://en.wikipedia.org/wiki/Electronic_tagging
i. attaching devices to prisoners so that when they stray from a certain area an alarm will be raised. ii. to attach a device to clothing so that unless the device is deactivated by the shop assistant, it will set off an alarm if the clothing is taken out of the shop.
Found on http://www.encyclo.co.uk/visitor-contributions.php