I suggested that, but they insist they need a "handwritten signature".
Honest answer: Get yourself Adobe Acrobat Reader (Win only). Even the free version allows you to do add a signature be it free-hand sketch, or as an image (they also have a cloud version of that). It's a pain, but does the job. Also,you can generate a SMIME certificate and add it into the document. Again, Adobe-specific solution. It's the only reason I keep Windows VirtualBox VM around.
If you don't want to go Adobe way, another option is to use Xournal to open the PDF in question and scribble your stuff onto it. Not great, but again, does the job. Sort of... Finally, there's LIbreOffice Draw which opens any PDF and allows you to edit it and scribble into it. The only problem is that when you save it back to PDF, sometimes it screws up fonts and there's little you can do about it. So YMMV. Optionally, there are some SaaS options for this out there, but I did not try (except the original Adobe thing).
Oh, and there is also Master PDF Editor which could help. I think the life-long license is worth avoiding the Adobe crap. Free version adds some watermarks, but if you are OK with that, you might be good.
@fribbledom Forget Android, forget Linux. It's a waste of time. Get yourself free demo Windows VM in VirtualBox, install Adobe Acrobat and go ahead.
Well, to be precise, Oracle did not write it in the first place. They bought it (Innotek GmbH acquisition). I also understand VirtualBox is open source, or something like that. But OK, if you are sufficiently ideological about it, then your options are accordingly limited, I guess.
Well, whatever we think about the outside world, the unfortunate reality is that sometimes we are forced to interact with big entities which require stuff like PDF signature. I still wonder why non-Adobe OSS solution emerged. It's crazy. Everybody needs it and nobody does it. SO is full of question about this.
So after lots of struggle in alternatives, I just gave up. After all, I have better things to do with my life than waste time on futile ideological battles with myself...
@tn5421 I wanted to say "I wonder why NO non-Adobe solution emerged". Stupid me... Sorry.
That's a big part of why I'm looking to solve the problem now. I have nothing better to do right now, absolutely zero concerns that are not self-imposed to take my time from me. If I can figure something workable out now, then there's no reason not to try.
I can 100% understand and respect your position as well. Not everyone has the free time I do to hunt down alternatives and figure out workarounds. Hell, until recently I was still mainly using windows because, for all the memes about how awful it was, it required practically 0 maintenance from me once initially set up.
I wrote about this a bit ago on a different post but I'd like to avoid non open software if possible. Only if there are no functional alternatives will I go closed.
Oracle is a bag of dicks.