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A biometric identification technique you may be seeing more of in the coming years is vein scanning. The veins inside a person's hand, or just one of their fingertips, are imaged and the results passed through a software algorithm to obtain a unique identifier for that person. In an identification scenario, that person would then be authorised or denied access, depending on whether their identifier matched one in the database and for which access was granted.

The simple task of measuring feet has taken a step forward into the optical future, thanks to a technology called FootSee developed by QinetiQ. The optical technique uses an infra-red LED light source to project an array of dots onto both feet simultaneously. The distorted array is recorded by 6 cameras and a software algorithm produces a 3D representation of the feet. Compared to manual techniques, this method provides more detailed information on foot shape and size (±1 mm) and in a fraction of the time.