Good news that showed up in USA Today, and was picked up by Sioux Falls' Argus Leader.
The app also aids children and adults with Down syndrome, cerebral palsy and Lou Gehrig's Disease, or ALS - even stroke patients who have lost the ability to speak, says its co-developer, Penn State doctoral student Samuel Sennott.
Using the iPhone and Touch allows developers to democratize a system that has relied on devices that were too expensive or difficult to customize, Sennott says. "I love people being able to get it at Best Buy," he says. "That's just a dream."
He also says that for an autistic child, the ability to whip out an iPhone and talk to friends brings "this very hard-to-quantify cool factor."