Wikipedia
Jamstik
Jamstik is a portable & wireless MIDI guitar controller made by Zivix, LLC. The Jamstik is compatible with iPad, iPhone and Mac. The jamstik has 6 strings, 5 frets and weighs 1 lb 9 oz. JamStik connects to iOS devices and comes with three free mobile apps, including JamTutor - an instructional app that is intended to teach users the basics of guitar with arcade-like games & challenges. The Jamstik has infrared transmitters that sense where a player’s fingers are on the fretboard, which allows users to determine if they are playing the right or wrong note.
Jamstik is made by a South Dakota-based contract manufacturer.