Delta has partnered with the Transportation Security Administration to expand its mobile check-in with an electronic boarding pass.

Delta Memphis-departing customers can now check in and receive electronic boarding passes on Web-enabled devices. The paperless check-in will be for customers doing domestic travel on nonstop Delta, Northwest and Delta Connection flights departing from Concourses A, B and C at Memphis International Airport.

"Delta's time-saving technology puts customers in control of their experience providing them with valuable convenience to check in from home or work via the computer or when time is tight and they don't have a printing device, they do have their cell phone," said Anthony Black, spokesman for Delta, New York.

Customers traveling in the United States and checking in for a nonstop flight from Memphis International Airport may simply download their boarding pass to their mobile devices via http://www.nwa.com or http://www.delta.com and proceed directly to the airport security screening area.

Customers checking bags should drop their bags at the baggage drop counter location prior to proceeding to the security checkpoint.

At the security checkpoint, TSA will scan the electronic boarding pass, check the customer's ID and process the customer through security.

Customers can then proceed to their departure gate, present their electronic boarding pass to the gate agent at boarding time and board with their designated zone.

Other airports currently offering mobile check-in to Delta and Northwest customers include Minneapolis' St. Paul, Las Vegas, Detroit, Indianapolis and New York's LaGuardia.

This announcement comes on the heels of the fact that TSA and American Airlines launched a Paperless Boarding Pass pilot program at Los Angeles International Airport in November.

The program allows passengers to receive boarding passes electronically on their mobile phones or PDAs, which will then be scanned by TSA security officers at the checkpoint and eliminate the need for a paper boarding pass.

Each paperless boarding pass will display a two-dimensional bar code along with passenger and flight information that will identify the traveler.

TSA travel document checkers will use mobile scanners to validate the authenticity of the paperless boarding pass sent to American Airlines passengers as well as the traditional boarding passes.

The new technology heightens the ability to detect fraudulent boarding passes while improving customer service and reducing paper use.

Continental Airlines was the first airline to team up with TSA to rollout a Paperless Boarding Pass pilot program.

The paperless boarding pass pilot is consistent with the global standard in the International Air Transport Association for bar coding of passenger boarding passes.

This joint effort between airlines and TSA will enable the airline industry to look forward to a paperless check-in process.

"Today, more than ever we are a mobile society, and this technology is fast, convenient and clean," Mr. Black said. "Even in the event of an itinerary change, no paper is required and there is no standing in line necessary, just a simple refresh."