There was already a similar item on the market several years ago. It was called "SUR TRAK". It carried a microchip that was "dumped" into the animal after the arrow penetrated. It quickly became illegal to use in Idaho. Anything that has anything electronic attatched to the bow or arrow is illegal here. Fair chase should be considered as well as the ethical standpoint. Others will use this to hit an animal "wherever" and try to get it after that. Unfortunately these things happen and they have to be nipped in the bud before it becomes a real problem. As an answer to your question, I wouldn't every purchase such an item because I don't think they should be allowed in hunting.