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An '''electromagnetic tracking system''' is a system that tracks an object in a three-dimensional space using electromagnets. It is also called a magnetic tracking system.
An '''electromagnetic tracking system''' is a system that tracks an object in a three-dimensional space using electromagnets. It is also called a magnetic tracking system.
−Electromagnetic tracking systems must be calibrated before they are used.
+Electromagnetic tracking systems must be calibrated before they can be used.
Magnetic tracking systems are typically expensive.
Magnetic tracking systems are typically expensive.