Proton Authenticator works on desktop and mobile, syncs securely, and gives you full control with no creepy data collection required

Proton Authenticator is a new 2FA app with encrypted sync, offline support, and no lock-in — all completely free and open source.

Swiss technology company Proton—known for its privacy-centered software solutions and services— just launched Proton Authenticator, a new open-source two-factor authentication (2FA) app.