Staska writes "A new Apple patent filing shows new directions for Apple's touch interface design. For smaller devices like iPod Nano, touchscreen interface may not be feasible — the screen is just too small for touch operation. According to the patent, Apple can still make full screen iPods and put a touch panel on the backside of the device with transparent controls on the front screen. In addition to iPod, patent filing also describes controls for the phone. ZDNet even thinks that this patent can hint about future touch interfaces for all Apple products."