Pedometer Accuracy

The accuracy of step counters (pedometer)varies widely between devices.

Typically,pedometer are reasonably accurate at a walking pace on a flat surface if the device is placed in its optimal position (usually vertically on the belt clip). Although traditional pedometer get affected dramatically when placed at different angles and locations, recent advances have made them more robust to those non-ideal placements.

Still, most pedometer falsely count steps when a user is driving a car or makes

other habitual motions that the device encounters throughout the day.

This error accumulates for users with moderate commutes to work. Accuracy also depends on the step-length the user enters.

Best pedometers are accurate to within ± 5% error.

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