Interesting Idea as long as security didn't make a change if they decided to inspect. Lol
Old trick from the punch-card days: Put the cards in the order you want then draw a diagonal line on the side of the deck. Then you can shuffle the cards (in fact, it's preferable to disguise the line) and can put them back into order later.

I've seen hollerith code stacks that had lines on them like that and never knew why!
Thanks for the info man, sometimes simple solutions are best.
Although you couldn't really use that deck of cards without getting bagged for a marked deck Lol