The combination of the finger-scan and the search code are then looked up in a central database, to ensure that they tally, before the transaction is approved.

ECONOMIST: Security

Szczesny has missed four matches since damaging the middle finger on his left hand but was given the all-clear following a scan last week.

BBC: Wojciech Szczesny

Participating passengers are asked to scan their passport photo page and have a print taken of their index finger.

CNN: Heathrow tests biometrics