First they invent RFID tags to make life "safer"... Now it's quite obvious that additional "unsafety" has been added to our lifes. Check this out:
http://www.passport-stronghold.com/passport_demo.swf
That's really a new business model!
Here's a quote from their site:
Don't be a target. Paraben's Passport StrongHold Bags use our patent pending design & faraday technology to block wireless signals to protect your personal information from being read by would-be identity thieves or other people who wish to invade your privacy. These bags are perfect for storing anything using RFID chips so no one can steal the information from your chip.
The principal is simple. The StrongHold Bag is a protective barrier wrapping your information in a signal blocking fortress. Your information remains secure until you have to pass it to authorized individuals for reading. Why walk around with an active signal telling everyone your personal information when you can be wrapped in the security of a StrongHold.