A pedometer is a device, usually portable and electronic or electromechanical, that counts each step a person takes by detecting the motion of the person’s hips. Because the distance of each person’s step varies, an informal calibration, performed by the user, is required if presentation of the distance covered in a unit of length (such as in kilometers or miles) is desired, though there are now pedometers that use electronics and software to automatically determine how a person’s step varies. Take action and start logging those steps, and losing weight, without having to spend a lot of money in devices like a fitbit.