Rethinking the screen meant we also had to rethink the software behind it. iPad mini intelligently recognizes whether your thumb is simply resting on the display or whether you’re intentionally interacting with it. It’s the kind of detail you’ll notice — by not noticing it. And it’s a great example of how Apple hardware and software work together to give you the best experience possible.
Essentially, you can hold your iPad mini just like the image on Apple’s home page without worrying about accidentally tapping the edge and changing something. This should reassure users who are worrying about their thumbs brushing the screen while reading a book or webpage.