"Trei, Peter" wrote: > > > Michael Motyka[SMTP:[EMAIL PROTECTED]] > > > > > > Tim May <[EMAIL PROTECTED]> > > > > > >On Tuesday, April 9, 2002, at 10:54 AM, Trei, Peter wrote: > > >> Putting RF Tags in cash is one of those ideas with Unintended > > >> Consequences. > > >> Muggers would love having a way of determining which victims are > > >> carrying a > > >> wad, as would many salesmen (and JBTs looking to perform a 'civil > > >> confiscation' on 'a sum of currency'.) > [...] > > > > > >Further, placing the notes in a simple aluminum foil pouch, or a wallet > > >with equivalent lining, would cut any detectable signals by maybe 30-50 > > >dB. > > > > > > > > > Not to mention that if you didn't want your money chirping its presence > > every time a bad actor pinged it you could just disable the transponder > > in the money : > > > > mechanical pressure or repeated bending > > high voltage > > high power RF > > heat > > > > For paper money failure rates will probably be high anyway. > > > > > Perhaps, perhaps not. Remember, the primary app for this is > anti-counterfeiting. > > "Sir: ALL your $20 bills are failing authentication. Please wait > while I call Security." > > Peter I thought of this but I felt that at this point it is no longer cash but a fixed-denomination smart card. Currently you can exchange a partial note ( > ~50% ) for a new one. There would have to be a mechanism in place for failed electronic bills otherwise people might not be very confident in accepting them. Granted, the inconvenience factor could get high.
Mike
