>>Actually, you don't — tap the "button" and just start sliding your finger. That works (sort of) but in a way it's even worse. Now you're sliding your finger

>>Actually, you don't — tap the "button" and just start sliding your finger. That works (sort of) but in a way it's even worse. Now you're sliding your finger a couple of inches to the right of the actual control image, further damaging the illusion of a physical control.