There's no doubt that smartphone accessories can get expensive, so how about a case that doubles as a gamepad? Billed as "protection with a purpose," Canopy's Sensus case aims to do just that. While there are several peripherals that add keyboards and joysticks to smartphones, Sensus goes one step further by adding touch input to a device's entire outer surface. The case's sensors recognize an additional ten touch responses, including controls on the sides and back of a device similar to the rear touchpad on a PS Vita. The focus with Sensus is to provide its users with unique touch input combinations that avoid taking up precious screen real estate. Most likely due to its uniformed design, Sensus is currently only being offered for the iPhone 4 and 4S; the outfit is taking pre-orders at $39 a pop, with shipments expected to begin in the first quarter of 2013. If you'd like to get a better feel for what Sensus has to offer (we know, we know), check out its demo video by visiting the source link below.