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banner image: Biometrics guide

A brief glance at the face is enough for most people to identify one another. Face recognition technology can be just as swift.

2D face recognition involves making a unique template from measurements between key points on the face.

This can be done from a live image or from a clear photograph - a method being used with the issue of new biometric passports in the UK.

Face recognition is being used by some authorities to scan crowds to identify suspects whose faces have been logged on a database.

However, some of the technology may be easy to fool through ageing or face coverings and there are privacy concerns over surveillance uses.

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