Here is how Delta's boardingpass-less system works:
One calls in by phone or logs onto website within 6 hours of departure to check-in.
At the airport, one presents an e-ticket itenerary at security.
At the gate, the agent scans the barcode on the frequent flier card; a cash-register tape receipt is printed stating pax name, FF# and seat#. This system, I understand, is used to handle standbys for upgrades, as well as other last minute changes, without necessitating agent-passenger interaction. The seat on the gate receipt is where one ends up sitting if any changes were made.
Can you imagine the # of people that would have no idea where they were sitting when getting on the plane without a paper boarding pass receipt?
Delta's Medallion check-in prints a receipt at the gate indicating the seat number.
Or the double-booked seat situation? The last minute seat changes/upgrades, etc? I think the paper makes for a much easier situation. Also, the computer system has a fart during boarding? The paper can be manually-taken and you can get on board.
Any last-minute changes are reflected on the final receipt at the gate.
If the computer system is "down" then they won't be able to print boarding passes in any case!
[This message has been edited by Points Scrounger (edited 10-21-2002).]