New passports might transmit your data
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 techonology.
The cover of the e-passport booklet contains a metallic sheathing that can diminish the distances radio waves travel, presumably hindering unwanted interceptions. Alloy envelopes that come with the PASS cards and driver's licenses do the same, the government says.
