It would be illegal in Oklahoma also. The heat sensor things are too.

I would think that it would be very expensive because you' d not only have to have the barb transmitter, but then you' d have to have a receiver that not only is accurate (and user friendly) but very small as most bowhunters don' t like packing extra stuff.

Then you have the extra cost of replacing the transmitters if it fell off the deer or got damaged. I imagine those alone would be about 50 bucks a pop.