Unfamiliar faces arent welcome at Beijing public housing projects. To prevent illegal subletting, many have facial recognition systems that allow entry only to residents and certain delivery staff, according to state news agency Xinhua. Each of the citys 59 public housing sites is due to have the technology by years end. Artificial intelligence startup Megvii mentioned a similar public housing security contract in an unspecified Chinese city in filing for an initial public offering in Hong Kong...

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