Get 2FA codes if you can’t access Google Authenticator If you can't log in to the Google Authenticator app, you can try other two-factor authentication (2FA) methods like Google backup codes.

Proton launches a free, open-source 2FA app with cross-platform sync that you can install on Ubuntu. It offers a privacy-focused alternative to apps like Google Authenticator.

Just last week, Proton released the AI chatbot Lumo. Today, the company rolled out Proton Authenticator, its free 2FA app.

Scan the QR code: Once you have enabled 2FA, you will be prompted to scan a QR code with your authenticator app. Open the app and scan the code to link it to your account.

Proton has a free new authenticator apps, which is available cross-platform with end-to-end encryption protection for data.