“For the first time at any airport, the biometric checks will apply to all domestic passengers leaving the terminal, which will handle all British Airways flights to and from Heathrow. 

The controversial security measure is also set to be introduced at Gatwick, Manchester and Heathrow’s Terminal 1, and many airline industry insiders believe fingerprinting could become universal at all UK airports within a few years.

All four million domestic passengers who will pass through Terminal 5 annually after it opens on March 27 will have four fingerprints taken, as well as being photographed, when they check in.

To ensure the passenger boarding the aircraft is the same person, the fingerprinting process will be repeated just before they board the aircraft and the photograph will be compared with their face.”

— from the Telegraph of London