Re: What about good old Cash
"Do you have any proof of that?"
It's a very insidious scheme. The chips automatically detect any attempts to test their existence and remain silent; also, any of the billions of commercial cash test units in use automatically switch places with a non-NFC capable counterpart from a parallel universe as soon as they detect tampering attempts. Finally, clerks willing to disclose their use of the technology (as well as any parties receiving the disclosure) get a visit from the MiB and have to choose between staying silent or disappearing without a trace. </sarcasm>