Is it true that there is now a chip or "cell" that can be injected or inserted into your horse and a beeper that you carry on your person that if your horse leaves a certian parimeter it goes off.. kind of like a lowjack for horses?

I heard someone talk about it? But I said I never heard of it and can't find anything on the net about it.. so it must not be true.. but not better place to ask then here.