This technology (US Patent 9,642,415) was developed by Cooper Perkins for New Balance. The company wanted to know if runners, informed of their form with respect to foot strikes, would make adjustments to their form if adjustments were necessary. The sensor strapped to a shoes’ laces accurately measures the degree of heel strike or toe strike while running. If the sensor determined poor form, an auditory indicator delivered to a mobile phone app let the runner know its assessment. The hypothesis proved correct: runners reported an amazing experience and an equally amazing response to the instantaneous running form feedback.