It is possible to microchip your tack... maybe your favorite saddle... to protect it from being stolen.
Microchipping with Radio Frequency ID (Identification) allows you to identify your tack items with 100% accuracy.
For more information, check out TackTrac.
And: FarmKey, click onto MicroTack.
Additional links:
[] http://www.saddleguard.co.uk/
[] http://www.chiptrac.co.uk/