You can accomplish the same thing with a waterproof bracelet containing the chip.
Bracelets are too easily lost, stolen, etc. ID and cash cards are getting smaller and smaller but our ability to track tiny things remains the same. Something like this will eventually be microdot sized.. I’ll look back into it 15 years or so.
You could do the same with a swipe of a thumb, just as is used for security on some laptops. RFID implants are overkill for this application. You should always use the right technology for the job.
Now, RFID can be checked from a distance and that CAN be a good use for it. But allowing an implant means you can’t choose to NOT be identified — even while walking down the street well away from this nightclub.
Driver licenses that can be pinged at a distance would be a potential solution to illegal aliens. Scan every vehicle as it passes a street corner, check the validity of the license, and alert a squad car to pull over the vehicle if the RFID check fails. The computer system replying to the RFID query can easily determine if the RFID is valid and has not been cloned; just based on checking the distance to the last place and time the RFID got pinged. Make it tough for illegals to hold a job.
Same thing with vehicle registration — verify at a distance that its fees are current, it’s insured, parking tickets are paid up, it hasn’t been reported stolen, etc.
At the same time, the RFID should have no information other than the unique number to check against a database. There have been plans for ID’s that embed a bunch of information on the card itself, which is just stupid. Information belongs in a database, not on an RFID card that can be snooped.