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It is very difficult for the blind to typewrite without Braille on the keyboard. This magic keyboard cover on whose surface is distributed by the Braille can be stretched to match any size of the keyboard. With this keyboard cover, the blind are able to typewrite on any computer and it is portable that the cover can be stuck one by one and curled into a roll like the tape roll.
Zhao Xiaoliang,Xue Mengru,Kong Boning,Sang Yilei