Originally Posted by SEA_Tigger
Do these things ever expire? I have two of the old white ones and two of the newer blue ones with the bar code.
I don't think they do. I have quite a few old ones, since on most flights I've been on I did not need them Some have a print date of 8/91 and have the old United (pre-serif) logo. Other came with the use of United Connection. They have always been accepted without question.