I like that there are at least 3 different technologies for accurate styluses on Android: there's the active digitizer based pen, like Samsung's S-pen, there's

I like that there are at least 3 different technologies for accurate styluses on Android: there's the active digitizer based pen, like Samsung's S-pen, there's this ultrasonic one from Qualcomm, and Nvidia's chip-based inexpesive solution. Too bad Google itself doesn't seem to be too interested in this area too much, even though it could be a pretty big competitive advantage against Apple's iPad, so we're only seeing random tablets that support them.