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<p>[QUOTE=&quot;Conder101, post: 7570680, member: 66&quot;]The software was developed almost 30 years ago. PCGS had software that would develop a &quot;digital fingerprint&quot; of each coin. With the really good counterfeits, they are detected due to repeating defects which were most likely in the source coins and are now in the die and which are repeated on each fake.&nbsp; Today they are discovered by people who happen to remember having seen them before and if they happen to have more than one of the fakes there side by side.&nbsp; The software would be used to scan coins and eventually these repeating defects would be noted.&nbsp; It would have a &quot;better memory&quot; and could do comparisons much faster.[/QUOTE]</p><p><br /></p>

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