<ul><li>A post discusses an experimental alternative flow for implementing native app authentication and authorization using OAuth 2.0 for First-Party Applications draft.</li><li>The approach focuses on authenticated device and user onboarding without gaps in secure channels, with the device responsible for user authentication.</li><li>Advantages include unique authentication of the application/device, enhanced security with 'auth_session' binding, and flexibility in user onboarding.</li><li>Disadvantages entail the need for client assertion adaptation, potential unsecured initial session setup endpoint, and vulnerability to DDoS attacks.</li></ul>

Experimental alternative flow for OAuth First-Party Applications

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