Here you will find the source for demonstration apps for both iOS and Android to support pressure sensitivity via the PressurePen.
All code included here is licensed under the BSD license as see in LICENSE.TXT, unless otherwise specified in the file's header.
For more information about PressurePen and how to obtain one for testing, please see:
http://pressurepen.net http://facebook.com/pressurepen
iOS version based on GLPaint by Apple: http://developer.apple.com/library/ios/#samplecode/GLPaint/Introduction/Intro.html