The clicking pedometers from decades ago are a thing of the past, Today, shoe pedometers are more lightweight and accurate than ever. For runners and walkers, portable GPS units are the most accurate way to measure distance, but a pedometer can be a cheap alternative. The best pedometers on the market today are waterproof, lightweight and affordable.
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Traditional pedometers are electromechanical devices that count steps and estimate distance based on a predetermined average stride length. Because people take different lengths of steps, these types of pedometers aren't highly accurate. A more precise pedometer uses a sensor pod or chip that's placed on an individual's shoe that transmits data to another device, usually a music player, smart phone or watch. These pedometer systems are superior because they allow users to calibrate devices to their individual stride lengths to more accurately measure distance.