Comment If they wanted to, they already could. (Score 1) 179
Cash is already trackable: http://www.wheresgeorge.com.
All U.S. bills have serial numbers; I imagine Euro notes do as well. On U.S. bills, they're printed prominently in bright green type with nothing* behind them. Looks pretty OCR-friendly to me. You wouldn't even need any extra time -- a scanner-equipped ATM could scan each bill's serial number as it dispensed it.
RFID in cash should not be a primary target in the battle for privacy.
(* Well, actually, the newer-style U.S. $10 and up do have an image behind the serial number, and so do euro notes, but since the image is relatively faint, and is the same on each bill, it should be a minor hurdle. More troublesome would be old, worn-out bills.)
All U.S. bills have serial numbers; I imagine Euro notes do as well. On U.S. bills, they're printed prominently in bright green type with nothing* behind them. Looks pretty OCR-friendly to me. You wouldn't even need any extra time -- a scanner-equipped ATM could scan each bill's serial number as it dispensed it.
RFID in cash should not be a primary target in the battle for privacy.
(* Well, actually, the newer-style U.S. $10 and up do have an image behind the serial number, and so do euro notes, but since the image is relatively faint, and is the same on each bill, it should be a minor hurdle. More troublesome would be old, worn-out bills.)
