How does a validity check on a stylus-made signature compare to a validity check for a pen-made signature
In the old days, when signatures were used to sign cheques, there were people specialized in how to determine whether a signature came from a particular person or from a different person (forger).
Nowadays, signatures are often made out with an inkless pen (stylus) on a digital tablet.
I would like to know what techniques used to be used to check ink pen signatures on cheques in the old days, and what techniques can be used in modern times to check the validity of signatures signed with a stylus (where such precision in making this information out is, indeed, required). Where would you need such strictness?
I think this site (user experience SE) is the best stack exchange site for this question. I was not able to find a better site. Alternatively, this post could be migrated to the personal finance and money SE. But I don't think there's a close fit.
Thank you for your replies.
Thanks.
