And mistakes do happen.
The use of facial recognition in public has drawn criticism from many You’re out shopping, minding your own business, when suddenly the security guard appears and declares you’re a criminal. That is the exact scenario one woman found herself in due to a mistake made by facial recognition software in a Home Bargains store.
How does live facial recognition work? Facial recognition starts by identifying face in a still or video – picking out which pixels make up a face and which are the body, background or something else. It then maps the face, such as measuring the distance between certain features, to create a ‘numerical expression’ for an individual. This can then be quickly compared to large databases to try to find a match from faces that have already been mapped.
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