OTPClient

Even if you only have the QR code, you can download the image or screenshot it and then extract the secret without ever having to use a smartphone by using zbarimg and then manually extracting the secret from the URI: sudo apt-get install zbar-tools oathtool zbarimg qr-2fa-code.png Output: QR-Code:otpauth://totp/username?secret=ABCDEFSECRET012349BASE32&period=30&digits=6 If you have some 2FA that you need to enter 10 times per day, then you can also add a global shortcut to automatically paste it. Of course, this undermines the "second device" security. Some PC password managers also support 2FA, e.g. https://github.com/paolostivanin/OTPClient ( sudo apt install otpclient )

I use Aegis[1] on mobile and OTPClient[2] on my computer, both are regularly backed up on change. I do not use the TOTP feature in my password manager as feel it will defeat the purpose of 2FA (though I can split it to a new DB in KeePassXC). For my work, the company uses a proprietary password manager, I just don't install it in any of my personal computing devices. - [1]: https://github.com/beemdevelopment/Aegis - [2]: https://github.com/paolostivanin/OTPClient

The Windows Yubico program allows scraping of the desktop to insert totp 2fa's. I did so today. They can also use WinAuth https://github.com/winauth/winauth Or for Linux you can use https://github.com/paolostivanin/OTPClient