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Are you lost again? Turn to the nearest manhole for help then. I’m not kidding as we’re showing you an innovative design here, the ‘Eco Sign’. It is a digital manhole that provides information about location of public transportation. Simply put your left or right foot on it for 2 seconds, the manhole will then refer you to the nearest train station or bus stop. More amazingly, it is powered by rainwater.

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Designer: Cheolyeon Jo & Youngsun Lee