Outlawing microchipping humans not so far fetched...

[Mackin USA]

She said sales of radio frequency identifiers are escalating around the world, and a company in Australia as of June 2016 sold more than 10,000 implantable chips with do-it-yourself kits.

"Each kit costs about $100 and includes a tag and an injection tool," Harris said.

The Wall Street Journal has reported an estimated 30,000 to 50,000 chips have been sold globally

http://www.reviewjournal.com/news/politics-and-government/nevada/outlawing-microchipping-humans-not-so-far-fetched-nevada-senator

SOME my want one in order to find them if they should get lost returning home from the BAR

[littleman]

My cat has one.  There has been talk about this for decades, but it is almost a moot point now with facial recognition and DNA sampling progressing so much.