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This light is just like a zipper. Unzip this zip, the light just turn on. The beams of light would follow the child when you walk on the aisle. And then the child wants to go back to his room, all the aisle would be lighted up. So the child would feel more safer and could come back by himself.
Chiao Tung University
Ni Feng Liu
New Taipei city, Taiwan
Ni Feng Liu Kai Chun Huang