Hammer Jammer by Big Walnut Productions

The Hammer Jammer allows guitar players (and keyboard players with guitar abilities) to develop incredible speed and unique patterns, and provides new percussive sounds for the guitar.
The Hammer Jammer also provides a legitimate and highly useful device for wounded soldiers and other players with arthritis and other issues which make finger picking and standard picking technique prohibitive.
You can now push the the buttons on the Hammer Jammer and it plcuks the strings for you.