What he said. These filters are entirely optional - noone is being subjected to them against their will.

The impression I get from the tech folks I know at Claranet is that they take things like privacy and freedom on the 'net pretty seriously.

Not RFID, but I remember something about 5 years ago at a few UK Universities that was very similar - think it was called Mondex. Essentially there were terminals around campuses where you could charge these cards up either with cash or with a debit card. They were accepted in all campus outlets, a few local bus companies, etc.

Certainly in Exeter (where I was at the time) they canned the project due to "lack of use". Which was surprising since everyone used the things all the time.