Feeling spaces with the 'proximity hat'
Ultrasonic sensors, batteries, and pressure pads are parts of the novel system that can be put on the head like a hat or headband. Decreasing or increasing pressure provides the person wearing the hat with information on the proximity of walls, passages or objects. The system, called proximity hat, measures the surroundings in real time and might help visually impaired persons orient in rooms and firemen find their way around in buildings filled with smoke.
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