More airports are now allowing travelers whose cell phones get e-mail to use paperless boarding passes for Continental Airlines flights.
The program, which started in Houston last year, is now available for flights out of Logan International Airport in Boston, Newark Liberty International Airport and Ronald Reagan Washington National Airport.
Boarding passes that Continental e-mails to passengers' cell phones and other handheld devices will display an encrypted bar code along with passenger and flight information.
TSA officials will use hand-held scanners to validate the passes.
Users must be flying alone to a domestic destination.