The ever-tightening search for and exposure of potential terrorists attempting to board commercial flights continues. Now being tested in several major U.S. airports, Biometric Exit is one way to automatically photo and store faces and personal info in instant-access electronic files.

The system will scan faces of all passengers who go through check-in lines. It will quickly ID those who require further scrutiny. Immediate action by security guards will be able to prevent sabotage or other danger to departing aircraft.