Theft prevention
If one buys a tracker, for between £50 and £400, then it will 'phone you if your P and J is moved, and tell you exactly where it is. When Plod finally gets into gear, it'll tell you where it is now, a day later, via Google Earth. (Don't complain: if we brought in "private sector expertise", they'd be worse.) Plod may not have Google Earth but you can mount a vigilante expedition........
They're widely used by caravan owners. Apparently the smart thing to do is paint your post code on the caravan roof so police spotter planes can identify it as it is stolen down the M6, while the stealers are unaware of this.........
There's a particularly neat tracker sold for £200 by Phil Cragg (as publicised in Real Classic, the only publication you actually NEED apart from MPH) at
www.headstartpets.co.uk. Originally he planned to sell it to owners of expensive dogs - Ariel SQ4's? AJS Silver Hawks? Rough Inferiors? Hardly Ablesons? - hence the name. Typing "caravan trackers" into Google will bring up lots more.