I'm trying to find a way to duplicate signed cards, either during the performance or before the performance, maybe using some sort of dual reality. If you had any sort of suggestion or places I could look that would be great. Thanks
The only one I can remember off the top of my head is Clone by JC Rodarte. I've never personally used it, so I don't know if it's good or not but I know it does take a few minutes for the transfer to happen
Guy Hollingworth Drawing Room Deceptions has a bit. “Seamless“ by Glenn West has an example of how he handles duplicating a signature. The The Aretology of Vanni Bossi has a funny use of a signed card (this duplicating method plays the long game, not for immediate use or with new participants). I’m sure there are more examples but those are off the top of my head.