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1Super realistic masks are made from flexible materials such as silicone and are designed to imitate real human face-
2down to every last detail. In a study by the Universities of York and Kyoto, researchers asked participants to look at
3pairs of photographs and decide which showed a __26__ face and which showed a person wearing a mask. Surprisingly,
4participants made the wrong call in one-in-five cases. The 20% error rate __27__ in the study likely underestimates the
5extent to which people would struggle to tell an __28__ face from the real thing outside of the lab. The researchers
6collected data from participants from both the UK and Japan to __29__ any differences according to race. When trial
7participants were asked to choose between photographs of faces of a different race from theirs, response times were
8slower and selections were 5% less __30__ . There are now dozens of criminal cases in which offenders have __31__
9themselves off as people of a different age, race or gender, sending police investigations down the wrong path. In one
10recent case, an international gang used an __32__ realistic mask to pose as a French minister, __33__ business
11executives out of millions of pounds. Dr Jet Sanders, who worked on the study while a PhD student at the University of
12York, said: "Failure to detect synthetic faces may have important implications for security and crime prevention as
13super realistic masks may __34__ the key characteristics of a person's appearance to be __35__ identified."
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