What it is
How it works
-
Capture: a camera snaps your face (photo or video).
-
Template: software measures landmarks (eyes, nose, angles, texture) to create a faceprint.
-
Match: that faceprint is compared to a database or your device’s secure storage to decide unlock / no match.
Where it’s used
-
Phones & laptops: fast unlock and payments
-
Airports & stadiums: identity checks and watchlists
-
Retail & banking: login, fraud prevention, VIP/service flows
Risks & limits
-
Privacy: images can be stored, shared, or breached.
-
Bias & accuracy: lighting, camera quality, and demographic bias affect results.
-
Spoofing: simple systems can be fooled by photos or masks; stronger ones use liveness checks (depth/IR/motion).
Stay in control
-
Use liveness-enabled systems (depth/IR) and keep devices updated.
-
Prefer on-device matching over cloud storage when possible.
-
Review permissions/policies: who keeps your image, for how long, and why?
-
Have a fallback (PIN/password) and rotate it regularly.
In sensitive contexts, ask for alternatives (manual ID, passkeys, security keys).