Touch Stylus Pens are used to control the touch screen with clicks, double-clicks, and clicks-and-drags. Stylus pens are input tools that use no ink, rather than using a finger. A pointed instrument used as an input device on a pressure-sensitive screen.
Though both a stylus and fingertip serve equally well, stylus pens also:
Avoid getting fingerprints and oil on the screen
Improves the precision and accuracy of touchscreen input
May be used for handwriting and drawing on the touch-sensitive surfaces
Great for small, tiny and delicate touches
Won't scratch the screen
Stylus Pens are used for selecting from menus, drawing, interacting and writing on touch screen surfaces.