Hello, I think that adding feature to encrypt paper (preferably AES 256) will be very helpful.
My use case: Currently i use libreoffice to store credentails of my various account's. It has inbuilt encryption and thus i prefer it over paper. I store this file in my dropbox , hence making it accessible on all of my devices.
I know that dropbox encrypts all docs at rest, but the problem is that, since i am a student, i often login on lab pc and sometime's on someone's else device, and if my dropbox credentail is leaked then i will be in big trouble. With libreoffice , i dont have to worry as even if someone get's my dropbox credential's , the doc is encrypted and no one will care to crack a doc file.
Why not use password manager? I just dont feel safe to use them because everyone knows that we store password there, and no system is perfect, so someday it may get hacked.
Why not keep using libreoffice? Because the phone app only allows me to view encrypted doc and not edit it. So if i dont have my laptop , then i have to keep that credential in something like google keep, after which i move it into that doc file.