Some of the bad "pushes" are "fat finger' or parallax problems. Touch screens when I first met them were capacitive or resistive. They were not contact between layers. I have a Garmin watch which has GPS but no touch screen, only buttons and a display with menus. Two watches ago I had touch screen. I do have a heart rate monitor feature that does not depend on a chest strap. The one with a chest strap only worked for about 1 year before I had to scape the gripper after every use. That now is a long time ago. The technology this watch uses I believe is IR or optical based on membership in the Society of Photo-optical and Instrumentation Engineers (SPIE). The CRT displays once referred to as "glass" and even some of the HUDs seem to have faded away. I saw these in 1969 in the McDonnell Engineering Laboratory Fighter Simulator Spheres where one of the cockpits had dials only and the other had CRT's. The CRT display I worked with had a light pen. Later I had a Personal ?? with a plastic stylus and Graffiti character reading language. Beside me here also is a INTUOS tablet that uses felt and hard tip pens.