I’ll give a more concrete example. If you bill the government for Medicaid home health services they required an ink signature. And in fact it had to be black ink, no other color was acceptable. When I was building software for electronic visit verification it was actually a formal legal block and required several states passing law to make digital signature images legally acceptable. If I had used a library like this to make the document digital signature look like they had been analog at some point it would have been a crime.

So just because you think it’s reasonable doesn’t mean the act of misrepresenting the origin and nature of the signature isn’t illegal.