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The blind people put things at the fixed places at home, so they can find them next time. When going outside, they put the things they need into a backpack. Now, we redesign a sorting backpack for the blind people. After the blind assort their things into several small bags, they put them into different places of the backpack. They can find the thing they want easily when they need it. Therefore, they can reduce the scope.
National Cheng Kung University