Most scanners to date have been moderately vulnerable to blocking devices. Say, a backscatter laser of some sort. And if personal identifiers are based on you carrying a broadcast device (e.g.: an info-leaking phone), one simple solution is ... don't do that.
I suspect that both the technology and its countermeasures will first be utilized by government (and corporate) "security forces".
Hrm ... related query: is it possible to build a simple device which would short out RFID scanners? If it becomes trivial enough to destroy the readers, then ubiquitous, obnoxious uses might at least become more expensive.
The tags are cheap. The scanners somewhat less so (especially when you add the labor cost of repair/replacement).
I'm not talking about killing in-store scanners and the like. However if I was aware of privacy-stealing roaming scanners in places they had no business to be in ... well. Raising the cost of data acquisition might be an entertaining hobby.
Most scanners to date have been moderately vulnerable to blocking devices. Say, a backscatter laser of some sort. And if personal identifiers are based on you carrying a broadcast device (e.g.: an info-leaking phone), one simple solution is ... don't do that.
I suspect that both the technology and its countermeasures will first be utilized by government (and corporate) "security forces".
Hrm ... related query: is it possible to build a simple device which would short out RFID scanners? If it becomes trivial enough to destroy the readers, then ubiquitous, obnoxious uses might at least become more expensive.