[CES 2011] We had previously heard rumors of an iPhone that might feature a touch-sensitive back panel but some folks out there have already gone ahead with the idea and created an accessory that does just that. The Touch UI accessory is an iPhone case that offers a secondary touch surface at the back, allowing you to use gesture controls using your fingers there. Gestures include navigating the browser, jumping to the address bar, search box and more. There are also double-tap, triple-tap commands, and also two-finger gestures in order to give you more complex control over your phone.