It sounds really weird and strange, but I cannot see how this can be, or should be, related to EAU or to security for that matter. If anything, it brought a strange situation and/or quirk to light by your quick observation and action. Nice job! Almost every traveler has from 1 to 12 plastic tags dangling from their bags complete with a ff number.....and/or a readable or concealed name and address tag close to it. Anyone can pull a bag from a luggage belt, read/remove the tags, and quickly put it back on with no one the wiser. I too am curious if "extra" miles show up in your account, and if so.......?