a sensor able to detect shearing forces as well as simple pressure includes a substrate , a support secured to the substrate , and shear force sensing unit located at an exterior surface of the support facing away from the substrate . the support can be elastically deformed in proportion to the shearing force or pressure . the shear force sensing unit includes first piezoelectric films on outer opposing shoulders of each support , the first piezoelectric film being elastically deformed with the support and outputting a signal accordingly . the magnitude of simple pressure is recorded by similar deformation of a second piezoelectric film entirely covering its support .