Hey, the cards say in no uncertain terms, "You don't own these, and anytime we want'em back, you gotta hand'em over!" (Well, I may have paraphrased a little.) I was a over-enthusiastic card harvester in my time, but last year as I walked through the California, I picked up a half dozen cards off the tops of machine on my way to head out the other side to go to Main Street Station. I was suddenly stopped and asked for ID by a pair of security guys. When they radioed in my name and asked where I was staying, (luckily it was the Fremont that trip, another Boyd property) I asked what was up and they said I had been seen trying to take "their" cards and demanded I give them back. Luckily I didn't have a pocket full of cards from all overat that time that I would of had to sort through for thier cards! They took back the six cards I pulled out of my pocket and asked me to leave. It shook me up for the next couple of days and now I try not to look like I am harvesting cards when I do so. I do a lot of leaning on the machines, looking at the pay table, as my hand on the top rests on the card I am scooping. On a busy machine, I say "excuse me" when I lean over a person to reach one, and if they look up, I check the card I picked up and mutter "Nope, not mine, but I know I left it around here someplace." If they stop me I figure I will say I was taking those "lost" cards back to the booth as I was going to get a replacement. Some (rare) places have files of abandoned cards at the card booth where they check for a card before they make you a new one. I always say I left mine home.