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A new computer algorithm can make a good guess at your sexuality from your photo. Researchers at Stanford University say they can identify gay people in 9/10 cases for men and 8/10 cases for women. The technology has been criticised by some LGBT campaigners. The Â鶹Éç's Alex Ritson told Oliver Conway how it works. (Photo: Rainbow Alex Ritson. Credit: Â鶹Éç News)