American Airlines announced that it has begun testing mobile boarding passes, beginning now with departing domestic flights from Chicago's O'Hare Airport, Gearlog reports.

Depending on how things go, the company will expand the program later today to Los Angeles International Airport and John Wayne Orange County Airport.

"Customers who want the mobile boarding pass must have an Internet-enabled cell phone and a valid e-mail address," the report said. "Sign in to American's Web site, AA.com—either via your cell phone or a computer—and select the cell phone boarding pass option. American will send you an e-mail with a barcode that will serve as your boarding pass when going through security and boarding the plane."