Excellent - Thanks! I always wondered if we could convert an old andoid phone or tablet into a USB/wireless graphics-tablet for drawing input -- or as a live a

Excellent - Thanks! I always wondered if we could convert an old andoid phone or tablet into a USB/wireless graphics-tablet for drawing input -- or as a live annotator for screen presentations where I can mirror the PC slideshow on the tablet and use the tablet to make annotations during a lecture say. If there are any such projects already -- I would e very keen to take a look.