Using PDFpen with a Stylus
PDFpen is designed to work with a pressure-sensitive stylus.
In PDFpen's scribble markup tool, PDFpen uses the pressure of the stylus to vary the stroke width for natural and expressive document markup.
PDFpen supports the following styluses:
Pencil from FiftyThree
Jot Touch & Jot Script from Adonit
Intuos Creative Stylus 2 from Wacom
Pogo Connect 2 from Ten One Design
JaJa stylus from HEX3