With all the sad news of bikes getting stolen recently I was wondering if it might be a good idea to put gps beacons on our bikes.

Kind of like bait bike, but not really since you don't want it stolen in the first place. Does anyone know what kind of beacons the bait bikes use?

Edit: I'm also looking for mtb shoes/pedals. Size 43 around. If you got anything spare or extra kicking around that you'd like to sale me, please do. I'm dying on running shoes out here.