or to jot down some notes on a touch screen, past and present uses are legion. DeltaPen internal components and their function. (Credit: SIP, Guy Luethy et al.) Where SIP Lab’s DeltaPen comes in ...

The 13.3-inch OLED screen from Samsung ... with zero latency, making drawing on the tablet as intuitive as doing so on paper. It's a touchscreen with customizable touch keys in the top corners ...