Supabase, an open-source alternative to Firebase, has introduced Phone Auth for its Auth v2 service. This feature allows users to log in using their mobile devices with SMS-based one-time passwords (OTPs). Supabase supports Twilio as an SMS provider and will add more options soon. The company also plans to introduce multi-factor authentication (MFA) in the future. Additionally, Supabase has added two new OAuth providers: Twitch and Discord, bringing the total number of supported providers to ten.