A wearable tracker continuously senses the movements of the body on a 3 axis accelerometer. The data is recorded all the time it is worn and powered up, which enables the tracker to trace if the individual is walking forward, running fast, or even standing still.A wearable tracker continuously senses the movements of the body on a 3 axis accelerometer. The data is recorded all the time it is worn and powered up, which enables the tracker to trace if the individual is walking forward, running fast, or even standing still.