Today, the U.S. Patent & Trademark Office published a patent application from Samsung that reveals future mobile devices that integrates transparent or invisible buttons that they call sensor pads. The buttons can be configured to work with different apps like a camera or a video game. With Apple's iPhone you can take a landscape photo by hitting the plus-volume button, but in Samsung's latest invention, they set 3 invisible buttons on each side of the smartphone frame. The user can change the camera button when in portrait mode for selfies so that the button is conveniently at the center-left or right depending if you're right or left handed. When playing a video game, the invisible buttons can be set for gaming controls. Both Apple and Google have patents regarding invisible backside controls for mobile devices, but Samsung's idea seems to be the most focused to date. If this idea interests you in any way, check out of Patently Mobile report here.