Autopen machines can be detected. There have been a couple of Panini scandals (Dak Prescott, Florida Georgia Line), plus Reese Witherspoon signed Barnes and Noble books this year.
2016 Panini Prizm - Rookie Autograph - Prizm #RA-DPS.2 - Dak Prescott (Autopen - No Sticker on Back) [Rerelease]
Courtesy of COMC.com
2014 Panini Country Music - Authentic Signatures - Blue #S-TH - Tyler Hubbard (Autopenned Signature) /149
Courtesy of COMC.com
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