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The Braille escalator indicates the position of each step to its rail. Which enables the blind to better get a sense of where each step is going up or down. This function is also followed by the vibration of the Braille when it is nearing the start of end of its trip warning the user when to step on or off.
South China University of
Saatchi & Saatchi X
Jianxiong Zheng, Qixian Huang