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China has a new surveillance tool that identifies citizens by how they walk


Chinese authorities have begun deploying a new surveillance tool designed to identify people by how they walk, or the shapes of their body. Adding to the already staggering number of surveillance cameras — many of which use bleeding edge optics and facial recognition technologies — China is already using the tool on the streets in its two largest cities, Beijing and Shanghai. It, again, raises concern among privacy advocates about how far the government is willing to go to keep tabs on its citizens. Its our cool new gadget site. Huang Yongzhen, CEO of Watrix, the company that designed the system, says it can identify people from up to 50 meters (165 feet), even when their back is turned or their face is covered. The tool would fill gaps in current surveillance technology, that needs close-up, high resolution images of a persons face to work. Watrix requires only a clear view of the person walking, even from the back or side. You dont need peoples cooperation for us to be able to recognize their identity, Huang told the Associated Press. Gait analysis cant be fooled by simply limping, walking with splayed feet or hunching over, because were analyzing all the features of an entire body. The company has raised some 100 million yuan ($14.5 million) already and is currently being used to thwart petty crime, such as jaywalking, and identify potential fugitives in crowds. Down the line, security officials say they are developing an integrated national system of surveillance camera data, of which the new gait identification system would be added. Chinese gait recognition tech IDs people by how they walkon Associated Press

China implements tech that can detect people by the way they walk


Limping doesnt fool the software. A Chinese surveillance company, Watrix, has developed a new system for "gait recognition" that can identify people up to 165 feet away based on how they walk. This means that if a person is wearing a mask or is at an awkward angle, the software can use existing footage to detect them. CEO of Watrix, Huang Yongzhen, told the Associated Press in an interview that the software can't be fooled by limping or other out-of-the-ordinary stances because it analyzes a person's entire body. Watrix's gait recognition technology is fed a video clip of the person walking, cuts a silhouette and creates a model of the way a person walks. While Watrix claims its technology has a 94 percent accuracy rate, analysis is not done live and in real-time. And it should be noted that these claims have not been independently verified and the effectiveness of this software is still largely unknown. Police in Beijing and Shanghai have already started using gait recognition, and is part of a push to develop data-driven AI surveillance around the country. It's especially scary for some groups within China, as security officials in the Muslim-majority western province, Xinjiang, have expressed interest in utilizing the software. This is on top of the already-established facial recognition technology that has been implemented in Xinjiang. People of this far-western region, known as Uighurs, have been detained, tortured and forced to do things against their beliefs in what China calls "vocational education and training." China has rejected UN claims of mass internment -- which it made public in August of this year -- saying that the reports were politically motivated. Gait recognition itself isn't a new technology, as scientists in Japan, the UK and the U.S. Defense Information Systems Agency have all been researching it. It just hadn't been commercialized, well, until Watrix entered the space. Huang believes that this technology will actually help Chinese citizens, such as when an elderly person falls over. But the virtuousness of gait recognition will be put to the test as it continues to roll out across China.