Ask PlayStation on X: Learn how to set up and deactivate 2-step verification (2SV), and where to find 2SV backup codes: Need more advice? Why not ask a PlayStation Expert

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My PS4 is asking for a 2 step verification code, but I don't have my authentication app or a backup code. What do I do? - Quora

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Have you lost access to your 2nd Step Verification phone : Contact Playstation Customer Support Help

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Getting started with security keys —

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How to enable 2-step verification 2FA for PlayStation account