[Android] OAuth2 Authentication Implementation Methods

Reference links for three ways to implement OAuth2 in Android apps: scribe-java, WebView, and AccountManager.

[Android] Error Occurs During Twitter Authentication When Time is Not Set Correctly

A wrong device clock can break Android Twitter authentication with a null challenge error.

Supabase Auth Custom SMTP Comparison - Evaluating All 6 Services from the Official Docs

Supabase Auth's default SMTP only sends to pre-authorized addresses, making it unusable in production. The official docs list 6 supported SMTP services under 'How to set up a custom SMTP server?' This post compares all 6 by free tier, SMTP configuration, and ease of setup.