IoT Full-Stack Technology
May 25, 2026 · Backend Development
Designing a Scalable Multi‑Account Login System
This article walks through the design of a unified multi‑account login system, covering phone‑number registration, password‑optional login, third‑party integration, database schema separation, pros and cons, and a one‑click carrier‑based authentication flow.
Database Schemaaccount designbackend
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