Arstechnica has this article entitled “Inklet for Mac turns your trackpad into a graphics tablet” by Jeff Smykil.
Inklet, turns a Mac portable’s trackpad into a graphics tablet. It also utilizes Mac OS X’s built-in handwriting recognition engine. The program Inklet is intended for use with the company’s Pogo Sketch stylus. You can download the free version of the application and give it a try.
I really can’t say much more without quoting the whole article.
Requires an Intel Mac and Mac OS X 10.6 or later
You can read the article here: http://arstechnica.com/apple/news/2010/01/inklet-for-mac-makes-trackpads-a-graphics-tablet.ars
You can download the software as shareware at: http://www.macupdate.com/info.php/id/33270/inklet





