I agree that "digital signatures" are a bit cheezy. That's why I had a rubber stamp made of my signature, and I stamp each print by hand for that personal touch...
...okay, seriously, I sign at the lower right corne of the print, on the matt, in pencil. That way, if I give a print to one of my high school students, they can erase my name and put theirs in. Yup, some of them do that...
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