Fantasia, it is nice to see you again! No, the resorts haven't resorted to the bar code, but at Typhoon Lagoon, the refillable mugs are coded. And, yes, it is a sticker that goes on and peels off. Pretty gluey when you first peel it off, but ours is mostly clear now. In fact, I am using it right now to get in my water. It is one huge mug from TL. Wish I were there now!!!