On a more old school tip is the "high performance sensitive" remote, which has a nine-axis gyroscope inside.

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By combining its three axis gyroscope with its three axis accelerometer, the newest iPhone is expected to reach a new level of sensitivity for apps.

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Examples include the FSM-SENS-1, a 6-axis sensor-only module that integrates with an external Freespace MotionEngine, and the FSM-SI-2, which combines the Freespace MotionEngine on an embedded microprocessor along with a 3-axis digital gyroscope, 3-axis digital accelerometer and optional 3-axis magnetometer (compass) to provide high-performance, calibrated motion data for a variety of applications.

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However, the Earth's axis is unstable and wobbles like a gyroscope over a period of 26, 000 years.

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