In South Korea, vacant parking lots automatically alert drivers using nothing but balloons and string

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While Germany's ParkTag app uses smartphone-enabled crowdsourcing to alleviate the stress of finding a parking space, sometimes solutions can take a much more modest form. The Here campaign uses a simple balloon system to let drivers instantly know when a parking lot space is free. Developed by Korea-based advertising agency Cheil, the system places a tethered balloon in the shape of an arrow in the middle of each parking bay. When a car drives into the spot, the string is pulled under the vehicle, pulling the balloon down. When it leaves, the balloon is free to float back up again,…

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