Veterinarians have been... Using microchips in animals for years.
Lol. I know. In anticipation of the future, I bought stock in one of those companies years ago.
It would help speed up the lines for homeland security at the airports.
Maybe for some international travel, but not for domestic travel.
Maybe start with the military so they don't have to wear dog tags. Save on metal for bullets.
Very often the thing they wish to push on the general population they try on the military first. It is certainly something to watch for, but I suspect we will see it in other countries first. If we see it become something required to travel, we will see the first step of the 'you can't buy or sell without the mark'.
We look back in history and we ask how certain things happened? How did the people let those things happen? The frog in the pot. We see it. We understand what they are doing. We watch.