Thread: Mark your guns?

I was thinking about this thread a bit more - an RFID chip in the stock would be a neat trick. They are the little chips in shop clothing, books, and your credit and eftpos cards that are powered by a radio signal to alert security systems or activate paywave at the cashier. They're dirt cheap, can be scanned from a distance, and never really stop working if protected (IE encased in resin etc).

It would take a little bit of determination on behalf of the owner to do (IE place the chips in the stock, buy a $20 scanner, document the chip ID against the firearm, keep a record) but it would be an invisible but easily checked method of cataloging firearms. Probably would be most effective because thieves probably wouldn't look for it, and if you knew to scan for it, is easily detected without having to disassemble the gun or use complicated or time consuming recovery techniques.