... when I first started seeing slotcards in use (localy) people would get multiple cards and leave them in the machines hoping the next person would continue to play without pulling the card, thus boosting the amount of play attributed to that player. Unfortunately, the slotcard thing caught on and everyone else begain trying to accumulate credits as well. Do you think that might be the case here? Looks like they were issued from different machines (one printed name the other raised). It seems a bit late in the game to be trying to pull that scam (leaving your card in the machine) with the popularity of slotcards now.