Quote:
Originally Posted by Taylor514ce
I don't think it's the pen, I think it's the TABLET that senses the pen.
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Yup. There is a Wacom sensor board installed directly behind the screen. The board generates a magnetic field, but does so only when the stylus is detached from its cradle. A resonant circuit in the stylus receives the magnetic energy and uses it to transmit a signal back to the sensor board, which reads the pen's location, angle, and speed atop the screen.