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Finger guide is a new surface of desktop, which could help blind person find tableware via guidance of concave.
In the past, flat table could not provide with any information about position of tableware. Blind person had to probe in the darkness searching for dinnerware without any indication of which the progress is both unpleasant and dangerous.
Finger guide is designed to solve the dinning issue of blind person. As the blind always has a keen touch, they could be indicated by concave through the sensation from finger, and thus could easily get the tableware. Concave provides position of tableware, guides direction for the blind.
Shang Tong Zishuo Fang Tengwen Hu Jieyu Jiang