Perhaps you know of this already, but I thought I'd pass it along!
Subject: AssistiveTouch Helps the Disabled Use a Smartphone Source: Apple Hot News New York Times columnist David Pogue reports on AssistiveTouch, an "amazingly thoughtful" iOS 5 feature that makes it possible to complete Multi-Touch gestures using one finger or a stylus. Writes Pogue: "I doubt that people with severe motor control challenges represent a financially significant number of the iPhone's millions of customers. But somebody at Apple took them seriously enough to write a complete, elegant and thoughtful feature that takes down most of the barriers to using an app phone." http://pogue.blogs.nytimes.com/2011/11/10/apples-assistivetouch-helps-the-di sabled-use-a-smartphone/