That’s a little high tech for governments in most areas of the USA. We pay the tax and get a stamped piece of metal (a literal dog-tag).

You can get your pet chipped here in the USA too, for a small fee, but that’s just to help you get them back if they get lost. In some regions it’s not worth it for that though. We used to live in Illinois and many pets were chipped in that area (outside of Chicago). All the vets and animal controls there had scanners and would check when an unidentified pet came in. We’ve since moved down south. Nobody has scanners here and many people have never even heard of them.