Originally Posted by BrisbanePE
So how is one supposed to keep ones BP for claiming missing mileage credit?
And how do the new BP's fit on the hanger when they stow your jacket?
As long as you keep them out of direct sunlight and away from heat sources, they last quite a long while. AA's self-service checkin machines were fitted with the flimsy paper from the start, and I still have some boarding passes from them that are at least a couple years old and still perfectly readable.
As was previously mentioned, the old BP's were thermal sensitive, also - just on a different paper stock.