preventing switched cards in holders

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Posted By: Hankron 

I haven't been fully appraised of what went on with the PSA holders. I will, however, note that there are variety of effective methods to mark or scientifically record cards to make it definitive to identify when a card has been switched or otherwise replaced with another. Some of the methods do not even do not add a substance to the card, but record the card in special optical ways for later comparison. The best marking methods are tamperproof and counterfeit proof. Some of these methods are already used in the fine arts, jewelry and even for industrial and scientific uses. I personally have used the optical recording methods for cataloging rare unique jewelry and photographs.

So if this was deemed a serious problem, a grading company could fix it, and the issue wouldn't exist anymore. Simple as that.