What I find interesting is that some people who are very concerned over a national ID card appear unconcerned over leaving a detailed record of their day-to-day lives in the databases of their card issuers.
I’ve driven to California and back from Knoxvile, TN twice in the last four years, each time paying for almost the entire trip with a credit card. The statements were remarkable—they precisely tracked everywhere I’d been and everything I’d done during the entire trip.