Can you imagine, as you enter your house, tired from work, bathing sweat, and suddenly, a rush of wind blowing you as you sit down and rest? Until you found out later that your sweat is gone!
How about an electric fan that is capable of detecting incoming person and activate its powerful fan and can follow the direction of the target without moving its base. Then detects the temperature of that person and shuts off when the temperature is down.
Cool eh?
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