Special alloy sleeves urged to block hackers?

July 12, 2009

To protect against skimming and eavesdropping attacks, federal and state officials recommend that Americans keep their e-passports tightly shut and store their RFID-tagged passport cards and enhanced driver's licenses in "radio-opaque" sleeves.

That's because experiments have shown that the e-passport begins transmitting some data when opened even a half inch, and chipped passport cards and EDLs can be read from varying distances depending on reader technology.