OK, you can step away from the desktop finger treadmill. Even if you have obese fingers Google is working to keep mobile users from clicking on ads accidentally (also know by the not so PC phrase of having ‘fat fingered’ an input).
Of course, while the end user experience is in mind here the real reason for Google addressing the problem of accidental clicks on ads in the mobile space is to keep the advertisers (the ones who pay to keep the lights on at the Google Plex) happy. Like click fraud in PPC, paying for clicks that weren’t really clicks can make advertisers a bit testy.
So how are they doing it? Take a look at these screen shots from the Google Mobile Blog.