Steam's Revamped Mobile App With QR-Code Login, New User Interface

Steam’s mobile app just got a revamp, and is now available to download on Android and iOS. In a new update, Valve has completely redesigned the look, while adding new features to the Steam mobile app. They include QR-code sign-in, log-in prompts, a new library look, and smarter notifications.

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New Steam Looks cool, And VERY EASY to login with QR code. : r/Steam