This question may have been asked a zillion times before but... Why doesnt the cattle industry used microchips instead of ear tags. If one universal chip was used, the cow could be id'ed throughout it's lifetime. I know that the odd chip will migrate, they are not cheap and that they are internal not external. But a brand on the outside and a chip on the inside seems to be the safest way to track. No way anyone could switch tags.
Is it just a cost issue at this point?
Is it just a cost issue at this point?