Building a Cross-Platform Credential Manager in .NET MAUI
Modern users expect authentication that feels native to their device — biometrics, passkeys, password managers, SSO, and multiple accounts — all while staying secure. This guide shows how to wrap those moving parts behind a single, testable credential manager abstraction so your .NET MAUI app behaves consistently on every platform.
What you’ll learn
- Why a dedicated credential manager matters — the responsibilities it owns and how it keeps authentication logic out of your views and view models
- A clean architecture — an
ICredentialManagerservice contract, dependency injection wiring, and a shared credential model that maps to each platform’s capabilities - Secure storage & multiple accounts — persisting secrets safely and supporting account switching
- The full authentication toolkit — password autofill, biometric authentication, passkeys, session restoration, and token refresh
- Enterprise-grade concerns — integrating identity providers/SSO, credential lifecycle management, error handling, and offline authentication
- Hardening — security considerations plus how the manager plugs into a RASP (Runtime Application Self-Protection) layer
Jorge grounds it all in real enterprise scenarios — banking, healthcare, corporate, logistics, and retail — and closes with best practices and future enhancements. Read the full post for the service contracts, platform capability mapping, and the design decisions that make cross-platform auth maintainable.