Hld
System Design
Medium
High-Security Biometric Access Mesh
Design a biometric authentication service for high-security facilities worldwide. The system must verify identities via facial/iris scans against a database of 10 million employees in under 200ms. It must function even if the local facility loses connection to the central cloud, and ensure biometric data is never stored in plaintext.
Key concepts
edge-heavy architecturesecuritylow-latency
Practise this out loud — free
Start a mock interview on THIS exact question — a voice AI interviewer opens with it, pushes back like a real onsite, then hands you an instant scorecard.
🎙 Practise this question now