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

Multi-factor authentication (MFA) adds an extra layer of protection to your accounts. Instead of relying only on a password, MFA requires you to verify your identity using two or more methods.

Looking for a free two-factor authentication app that works across platforms? Proton Authenticator offers broad import capabilities, iCloud sync, and thoughtful security features from a company you ...

Authenticator apps auto-generate numerical codes to help secure your online accounts. These codes act as a form of 2-factor authentication (2FA). Here are some of the best authentication apps ...