I'm trying to create an account with a company that sadly requires a 2FA authorization app or private key to login. I've never used anything like that. I don't have a smartphone. I have a dumbphone that only does calls and texts. It can't download anything and it can't access the internet (this is by choice, BTW). I also don't have any Google accounts so Google tools are out.
They told me to download an Authenticator app or buy a Yubikey, which from what I can see would also require a download. I've never used such a thing; don't have a clue how to get one or what to do with it.
I have a desktop running Bionic Pup. My preferred browser is Firefox but I can use Chromium if it helps.
Any suggestions from the brain trust? If possible, I'd like whatever tool I download to be in the puppy package manager for simplicity's sake. I see some possible tools there there but honestly I am so confused.
Thanks