Traceability codes help guide dogs provide efficient services to visually impaired

Dogs are humans' best friends and are cherished for their loyalty and courage. But some of them are born to shoulder more responsibilities, such as Guide dogs, who act as a "second pair of eyes" for the visually impaired. At the 2022 Beijing Winter Paralympic Games, 68 guide dogs were selected as special volunteers to help the athletes, bringing the service of guide dogs to the spotlight once again with their special technological secrets this time. Follow the story with CGTN's Xu Yi and check it out.

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