Yes it is and it is RFID , They have been using them for years to track pets. RFID is nothing knew. They were available back in the mid 80s. I remember when I first saw a proximity card. I thought it was slick as shit. the only thing that has changed is the size and electronics. I was specifically speaking of nano particles and their size. If you are tough enough; a stun gun will make a RFID chip inoperable. just like when you go through the Walmart and the theft tag is inactivated by an electromagnetic pulse and doesn't trigger the scanners when you leave the store. I think the more they do, the clearer it will become of what they are up to. I have had the vaccine and the second dose. I was reluctant but was willing to be the guinea pig to try to ascertain what they are up to. it is a very tiny needle.

As a side thought. it is not entirely impossible to use a cell phone (not necessarily your own) to emit an energy wave that hits your RFID implant and send the information back to a monitoring station using the other persons cell phone. Apple sells a tracking tag that does just that . they utilize other people's cell phones to track pets and just about anything you want to track.

https://www.apple.com/airtag/

Read the darpa white paper on self assembling graphine oxide and injectable "chips"