posted on Sep, 3 2009 @ 08:14 AM
1) The passport is not a GPS. That would be impossible, as it has no power source and therefore could not broadcast its position.
2) The passport contains a RFID chip. This is (arguably) an anti-counterfeiting measure, because although it is easy to spoof a RFID chip, using a
device which scans the chip, and then transmits the same signal the chip would when it detects a RFID reader, it is too complicated to manufacture a
custom RFID chip that would fit inside a counterfeit passport.
3) RFID is an effective way to increase the security of conventional documents and magnetic-stripe cards, but is not secure on its own. A system
based on say, turnstile like devices with readers in them could be easily tricked with a pocket-sized electronic device.
4) You can destroy the RFID chip by cutting the antenna or crushing the chip. You can also microwave it, but it will visibly damage your passport.
I suggest simply keeping your passport in a RFID-blocking jacket (The government now recommends this, by the way) and not using it except when
explicitly required. There are more important battles to be fought.