Ripples: Utilizing Improve User Interaction with Touch Displays

We present Ripples, a system which enables around each contact point on a touch display these visualizations, provides feedback to the user successes and errors of their touch interactions. Our vis alization system is engineered to be overlaid on top of e isting applications without requiring the applications to be modified in any way, and functions independently of the application’s responses to user input. Ripples fundamental problem of ambiguity of feedback action results in an unexpected behaviour. can be caused by a wide variety of sources. We des ambiguity problem, and identify those sources. We then define a set of visual states and transitions needed to r solve this ambiguity, of use to anyone designing touch a plications or systems. We then present the Ripples impl mentation of visualizations for those states, and the results of a user study demonstrating user preference for the sy tem, and demonstrating its utility in reducing errors. Author