Thumb Based Interaction Techniques for Input on a Steering Wheel
As more systems that require user input are integrated into motor vehicles or carried in by the driver, it is necessary to investigate new interaciton techniques that are well suited for in-vehicle interaction. The systems today include navigation/information systems, MP3 players, satellite radios, and cellular phones, PDAs, and more will certainly be available in the future or carried into the vehicle by the user. Current interaction techniques in automobiles mostly use buttons, custom knobs or on-screen keyboards, which require the user's visual attention. A proposed alternative is voice recognition; but it has numerous drawbacks, including low accuracy in general, susceptibility to environmental noise, vulnerability to user differences, and a tendency to convey greater intelligence than warranted. In order for in-vehicle user input to be safe and feasible, it is necessary to investigate interaction techniques that allow the driver to focus on the road by minimizing required visual attention and movement away from the steering wheel.