Silicom.com is reporting that, not satisfied with the introduction of biometrics, the US Department of Homeland Security has decided to trial RFID tags for tracking visitors to the US.
I can't find any confirmation of this, but if true, I guess it means I would no longer be willing to visit to US. Considering I currently visit the US two to four times a year, and have done for the last five years or so, and how inconvenient it's going to make things for me not to be able to go to the US, that's a pretty big decision. But there comes a point where you have to make a stand, for me this is it. I'll not be tagged and tracked for any reason, it's just offensive.
At least, I won't be tagged and tracked by a foreign government. With the introduction of identity cards and biometric passports to the UK I soon might not have a choice about such things at home. Perhaps it's time to think about emigrating, if I can find anywhere left to go...
Update: The rumours would seem to be confirmed at this point. The statement that "...it will be impossible to track the whereabouts of someone holding such a passive tag without a corresponding reading device", doesn't reassure me for obvious reasons.