The humble RFID proximity card has been the backbone of access control for 30 years. It is reliable, low-cost and widely understood. It is also the weakest link in most commercial security systems — because a card authenticates an object, not a person. A stolen or borrowed card grants full access to whoever holds it.
AI-based access control solves this fundamental problem by authenticating people rather than credentials.
The Credential Hierarchy: From Cards to AI
Something you have (RFID card): Authenticates ownership of a physical token. Lost or stolen cards immediately compromise security. Revocation requires knowing the card is missing — which often happens only after an incident.
Something you know (PIN): Adds a layer but PINs are shared, observed over shoulder and forgotten. Adds friction without adding sufficient security in most commercial environments.
Something you are (biometrics): Fingerprint and face recognition authenticate the individual, not a credential. Cannot be shared, borrowed or left behind. This is where AI transforms the paradigm.
AI-verified multi-factor: The highest security tier. Face recognition plus liveness detection (confirming a live person, not a photograph or mask) plus optional PIN or card tap. AI validates all factors simultaneously, providing near-zero false acceptance rate even against sophisticated spoofing attempts.
AI Access Control in Practice
Frictionless access: AI face recognition readers identify employees from 0.3–1.5 metres as they approach, opening the door before they reach it. No stopping, no touching, no slowing down. In a facility with 500+ employees entering at shift change, this dramatically reduces congestion compared to card systems.
Anti-passback: AI access control tracks whether a person has entered a zone before allowing exit credentials — preventing one person from entering, passing their card back through a gap, and a second person entering without authentication.
Tailgate detection integration: AI video analytics at the door detects when more than one person enters on a single authentication event and flags it immediately — the most common physical security bypass technique.
Visitor management AI: Visitors receive a one-time QR code or temporary face enrollment via mobile app. Their access is automatically time-limited, zone-restricted and logged in full. No physical badge printing, no manual entry, no visitor log that an intruder can observe and exploit.
Deployment Considerations
Transitioning from card to AI access control does not require replacing all infrastructure simultaneously. A hybrid approach — deploying face recognition readers at the highest-security zones first, while retaining cards elsewhere — allows risk-prioritised deployment within budget constraints. Controller compatibility varies; Pujaso's engineers assess existing infrastructure and design migration paths that maximise reuse of existing cabling and door hardware.