What is the maximum range from which an RFID chip implanted in a human can be tracked?
—Name withheld
———
Tags that can be embedded in humans or animals are either low-frequency (LF) or high-frequency (HF). These tags generally have a short read range—under 3 feet. Some vendors that manufacture tags for implementation advertise a read range of 18 inches, but the actual read range is probably closer to 6 inches.
—Mark Roberti, Editor, RFID Journal