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However, a high-gain antenna can actually read tags from much further away, leading to privacy problems. Governments or others could punch through privacy screens and keep tabs on people. Difficult to remove
? RFID tags are hard for consumers to remove; some are very small (less than a half-millimeter square, and as thin as a sheet of paper) – others may be hidden or embedded inside a product where consumers cannot see them. New technologies allow RFID tags to be printed right on a product and may not be removable at all
Disruptions if maliciously jammed
? RF signals can be jammed, which could complicate everyday life if RFID tags became essential. Imagine a central bus or train station, maybe an airport, where suddenly everyone could neither be ID’d or access their cash accounts. A single hour of jamming during morning rush over a large area could cost a large city untold millions of dollars in delayed commerce and transport.
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