This PC Magazine commentary discusses possible human micro-chipping that may emerge years from now

https://www.pcmag.com/commentary/355485/ready-or-not-youre-getting-microchipped

Since 2016, the UK has required pet owners to microchip their dog before eight weeks or face a £500 fine. A small RFID chip is implanted just below the skin, so if a lost dog is found wandering, it can be easily reunited with its owner.  But we’re not stopping with furry friends. Recently, a vending machine company in Wisconsin microchipped (supposedly willing) employees. The chip, inserted in the hand, opens doors and buys stuff from office vending machines. About 50 of 85 workers took the firm up on its offer.

Like it or not, getting “chipped” is in your future. The fact that anyone would want this diminutive “tag” embedded in their hand (it’s generally placed in the fleshy area between the thumb and the forefinger) is beyond me. But don’t be surprised to see pro-microchip propaganda.  If you use Apple Pay, Android Pay, or any Near Field Communication (NFC) system, this will be much easier to use. Just wave your hand to pay.

NFC has no inherent power capabilities; there’s no lithium battery or anything. A nearby induction field powers the device and turns it on when it’s in range. This passive option seems more acceptable to the public. Entrepreneurs can always sell “Faraday” gloves for the paranoid.  The little device could eventually contain a credit card, driver’s license, passport, maybe even your medical records.