Somewhere in the realm of Adobe, the PDF design/spec, and open source software, there are big problems properly supporting forms and signing.
Adobe Acrobat Reader is now only supported on macOS and Windows. And only Acrobat Reader fully supports all the varieties of forms in various PDF specs. I think it's a big problem for government to in effect require the use of a monolithic and proprietary operating system to fill out government forms.
And then the whole state of signing PDFs is a confusing mess. Learning how to create or buy a certificate is irritatingly confusing, and then where the certificate goes and how to use it. Google search guides and it's completely different instructions depending on platform and Acrobat version. The latest versions of Acrobat Reader let you do a thing called signing a document, but it doesn't use certificates, doesn't let you add a password to the document to prevent modification, but you can add text/image/drawing of a "signature" - no doubt this confusing thing exists because the certificate based signing is so difficult. And then verifying digital signatures isn't something people know how to do: technical companies I work with do not accept them unless the digital signature includes a visible human signature and the PDF security options enable printing the PDF!
Adobe Acrobat Reader is now only supported on macOS and Windows. And only Acrobat Reader fully supports all the varieties of forms in various PDF specs. I think it's a big problem for government to in effect require the use of a monolithic and proprietary operating system to fill out government forms.
And then the whole state of signing PDFs is a confusing mess. Learning how to create or buy a certificate is irritatingly confusing, and then where the certificate goes and how to use it. Google search guides and it's completely different instructions depending on platform and Acrobat version. The latest versions of Acrobat Reader let you do a thing called signing a document, but it doesn't use certificates, doesn't let you add a password to the document to prevent modification, but you can add text/image/drawing of a "signature" - no doubt this confusing thing exists because the certificate based signing is so difficult. And then verifying digital signatures isn't something people know how to do: technical companies I work with do not accept them unless the digital signature includes a visible human signature and the PDF security options enable printing the PDF!