[Q] Removing dirt/dust from screen w/o affecting playback topic

In dark areas of the screen, any dust or dirt becomes easily visible and distracts me from watching a movie.
I can of course wipe it off with a finger, but then the movie will fast-forward, volume and brightness-level will change etc. :eek:

Is there some trick - short of disabling all gestures - that will make it possible to touch the screen without affecting playback?
(Like a special gesture that will temporarily enable the other gestures)