Zorba
27
Platinum Level
I agree with you on ppl possibly dabbing something on a few cards but they wouldn't be able to mark the whole deck and then be able to tell exactly what each cards is.Hard to say - if the marks they were making really were invisible to anyone who wasn't wearing the glasses and the people doing it were halfway competent then I expect it wouldn't be that hard to get it past the dealer. We've only got one set of eyes, after all, and most of the time we'll be looking where the current action is.
Plus I'd assumed that if anyone was doing this during a live game they'd be more likely to do something like touch their finger on an ink source in their pocket then smudge it onto the card with their fingertip rather than using a pen, so the action could look 100% innocent.
Or maybe they could have it on the underside of their card protector? I dunno, 99.9% of the card marking problems we get in the games I deal (and the problems are rare to start with) are with unintentional bending because for the most part I deal to n00bs
Bending of cards or somehow creasing a few cards is what I have come accross, I think ppl that are caught doing this should be taken out back of the venue and persuaded in a special way not to come back.