Elaborating from the battery-saving PRISM screen tech that we saw on Tegra 3 devices, the NVIDIA CEO Jen-Hsun Huang showed off a new software-based touchscreen technology that allows you to use a simple capacitive stylus with a degree of pressure-based input. Showing of his writing skills at Computex on an experimental 7-inch tablet, he used a simple (ie. non-digitizer) stylus to write at several different thicknesses, utilizing a flat surface at the other end of the pen to erase any mistakes -- there's sensitivity to the millimeter, apparently. NVIDIA
