OFI 1162: New Technology To Prevent Sheep Thefts

A few weeks ago while reading articles for our rural crime episode I saw a quote from a police officer in the U.K. who was being interviewed about the thefts of sheep.  He was clearly frustrated with the fact that so many sheep are stolen in the U.K. and the cases go largely unsolved.  In the quote he recommended that sheep owners use some sort of marking technology on their lambs such as "TecTRACER".  I had never heard of such a thing so I looked up what it was and was intrigued as to how it works.