Continental Airlines has introduced a mobile boarding facility at Heathrow Airport.
The carrier is the first to offer paperless boarding passes on non-stop flights to the US from the UK.
Customers can have a pass featuring a two-dimensional barcode sent to a mobile device, which is then scanned and validated at the security checkpoint and the boarding gate. Simply go to pda.continental.com using your phone's Internet browser.
Continental currently offers mobile boarding from 42 airports - including its US hubs in New York, Houston and Cleveland - and became the first American carrier to launch the facility from an international destination when it extended it to Frankfurt late last year.
Martin Hand, the carrier's vice-president of reservations and e-commerce, said: "We are pleased to add Heathrow to the growing list of airports we serve with mobile boarding passes.
"Customers have told us this is the type of product improvement they want and we will continue to expand the self-service technology to more of our domestic and international destinations."
Continental currently operates three daily flights to New York and two to Houston from London Heathrow.
It will be adding another service to New York in March, followed by a fifth daily connection in October.