It's an absolute pain, but you can use signal-cli to do it (or at least you could a few months ago when I did). Just an FYI if you ever have time to burn.
I notice the README file for signal-cli [1] says registration "may require solving a CAPTCHA challenge", which might involve running proprietary software. I found a forum post that says this also sometimes happens on sign-in [2], which might make it difficult to use Signal without proprietary software. I might try it anyway at some point because it does say "may" :)
Good to know! Thanks.
I notice the README file for signal-cli [1] says registration "may require solving a CAPTCHA challenge", which might involve running proprietary software. I found a forum post that says this also sometimes happens on sign-in [2], which might make it difficult to use Signal without proprietary software. I might try it anyway at some point because it does say "may" :)
[1] https://github.com/AsamK/signal-cli [2] https://community.e.foundation/t/signal-and-hcaptcha/83470