From the news I read about Face Recognition A park in Beijing started a trial to save toilet paper and stop thieves from stealing it. Temple of Heaven Park installed six face recognition scanners. It will scan people's faces before giving them 60cm toilet paper. The park put up posters and put messages through loudspeakers asking visitors to use less toilet paper. The face recognition scanner has brought surprises. They have become a tourist attraction. Visitors came to try the engine. Videos of people taking toilet paper from a machine have been infected with a virus in social media. The park staff still helps people with problems using machines or those who desperately need more toilet paper. Scanners seem to be popular. A user on China's social media website wrote: "This is a great idea, I recommend to be launched in the national toilet." This experiment was successful so far. The daily amount of toilet paper used has gone down by 20%.
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