Carry on:check. Passport:check. Iphone:check.

Mobile phones as boarding passes. With 80% of travelers using electronic check-ins, airports & airlines are looking for other ways to speed up boarding times. A test conducted by Continental shows their customers can pass through security and board their planes by flashing their mobile phones. Security and airline staff can scan barcodes that are displayed on a phone in the same way they scan paper passes today.
As mobile devices become more sophisticated, airlines expect passengers will be able to use their phones, BlackBerrys and other mobile devices for a growing number of services, like rebooking a ticket after a missed connection, switching seats, checking standby status or seeking an upgrade."