It’s possible that within a few years we’ll all be buying tiny, self-contained tracking devices for locating lost or stolen property at the call of a mobile phone. Products like the EZ-Trak from Aus are surely just the beginning in terms of using GPS and cellular technology.
Maybe a sort of cellular RFID labelling type system, which can be indelibly attached to things to track them? Perhaps even using something like a SmartWater Superlabel?
Speaking of which, spraying intruders with Smart Water looks like a really cool way of identifying rogues.