Was just in vegas and one of them kept spitting out blanks. I have a feeling people swiped their card and didn't realize they needed to keep rotating and assume

Was just in vegas and one of them kept spitting out blanks. I have a feeling people swiped their card and didn't realize they needed to keep rotating and assumed it broke. Ended up with a whole collection before getting tired and leaving it. No telling how many more it would have spit out.