99luftballon writes "If, like me, you're more than a little concerned about the privacy aspects of RFID there's a useful enthusiast's web page on making your own RFID-blocking wallet. OK, it's never going to win any prizes for beauty or garner fashion awards but should be effective and seems perfectly practical. "
... though his invention worked superbly -- his theory was a crock of sewage
from beginning to end.
-- Vernor Vinge, "The Peace War"