In a July post, I mentioned Behavioral Detection Teams where airport personnel specifically looked for odd behaviors. However, according to Computer World, they're working on prototypes to have computers detect micro expressions and physiological changes. This Fox Story talks about the study for the automated body language reader as well as technology being examined for eye and pheromone testing.
If you have a traveling character who gets their identify stolen or revealed, one of many ways is to scan the chip in their passport. Don't forget, the U.S. now has passport cards for travel when entering the United States from Canada, Mexico, Caribbean or Bermuda via land or sea crossings. The Passport card cannot be used for international air travel.
Want to block your your character's cell phone signal on a subway or airport tram? See how it's done on London's tube.
For the person on the go, don't forget that certain airlines now allow you to use your PDA or cell phone to have your mobile boarding pass scanned electronically.

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