It’s easy to see why gadget makers are so fixated on touchscreens. Swiping is intuitive. It enables sleek lines for a futuristic aesthetic. It’s the easiest way to banish bezels and maximize screen real estate. So I understood why Fitbit was chuffed when it introduced the inductive button on the Fitbit Charge 3. Begone side button protrusion, and behold the slim ...