This stylus enables designers and artists to draw precise images on usually clunky touch screens. Courtesy Adobe

Drawing on a touchscreen has never been as natural as doodling on paper. An iPad’s capacitive display only records touches that are greater than 4 millimeters—too large for finer details. The tip of the Adobe Ink stylus is just 2 mm, but a specially designed transmitter near the grip of the pen tricks the screen into reading it anyway.

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