I've been talking about RFID as a security risk for a long time now... Now, my card companies have sent me two cards that have RFID tags in them, without my requesting it or approving it; and there is no option NOT to have this "feature".
Of course now all passports have an RFID tag embedded in them (mine doesn't yet... next year).
Again, no option to NOT have this "feature".
...So I have an
RFID blocking wallet, and
passport folio.