Using a force control system reacting to the pressure on the feet, HyQ can navigate and traverse irregular surfaces and adjust its pace to overcome obstacles of different sizes and shapes.

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He could not only see with the iPhone, where he did a control-force system and monitored the various things going on in his house.

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Take the chaos that has engulfed Brazil's airports for the past six months, the result of a creaking air-traffic control system operated by disgruntled air-force staff.

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Still, the American air force has shown interest in them, as a subsidiary instrument-control system for pilots.

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