This prototype tactile iPhone case called Invisual allows sight-impaired users to get the most out of the smart phone. It would work in conjunction with special accessibility functions, such as text-to-speech features and moon type tactile alphabet keyboard.
Portugal-based designer Bruno Fosi crafted the silicon case with modified bas-relief buttons that correspond to the iPhone home screen. Fosi says that the iPhone thus covered keeps all its functions intact, including multi-touch and finger flick scrolling.
Via Yanko Design