[OfSanguineFire]

Your post said “documents, images, and invoices” and “business”. In the real world, documents and invoices in business are overwhelmingly sent in PDF format. Even images get embedded in PDFs a lot of the time. PDF e-signatures can be validated, the technology is based on very standard crypto with FOSS implementations. Fine if you have a different workflow that requires PGP, but most people clearly don’t feel it is impossible to “do business” otherwise.

[BeetleB]

> In the real world, documents and invoices in business are overwhelmingly sent in PDF format

This is evasive and dismissive. When your parent is talking about the issue, there's a good chance he is already using it. Telling him what "the real world" does is irrelevant. He has a use case already, and needs a solution for his use case, not for the rest of the world.

[OfSanguineFire]

Almost every time on HN that there is a discussion of changes in technology that experts would argue are overall good, there is always someone who says “But that would break my use case!” This even got lampooned at xkcd[0]. OK, I understand that he finds this trend vexing. But no party to this discussion is obliged to spend their time and effort on suggesting a solution, especially when we don’t know his specifics and our suggestion might simply be rejected out of hand.

[0] https://xkcd.com/1172/

[dig1]

> In the real world, documents and invoices in business are overwhelmingly sent in PDF format

In your real world, probably. In actual real world, people use MS Word/Excel (or LibreOffice) and images a lot, beside PDF. Good luck using e-signatures with that :)