I kept the card in my back pocket once when heading home from Vegas. I decided not to use it on the way in, because I actually wanted to _get_ to my destination.

I set off the security alarm and declared, “Oops, I forgot to put aside my bill of rights!”. They just motioned for me to put it in a bowl. It was pretty funny to me but completely lost on the security personnel.

Oh well. Great idea though.