22 RFID in vaccines posted 3 years ago by eagleheart585 3 years ago by eagleheart585 +23 / -1 17 comments share 17 comments share save hide report block hide replies
Roughly 100 feet. Think about those quick passes people can stick to their cars which help them pay highway tolls; those use RFID tags. Maybe a bit less effective because it would need to pass through your body first