LAS VEGAS, NV - JANUARY 08:  Ion Audio managing director William &quot;Jeff&quot; Fortin displays the Ion Audio Guitar Apprentice during a press event at The Venetian for the 2012 International Consumer Electronics Show (CES) January 8, 2012 in Las Vegas, Nevada. Users put their iPads into the USD 99 unit and with a free App can use the guitar as a teaching and performance tool. The frets on the guitar light up to show finger placement and there is room to plug the device into an amplifier. CES, the world's largest annual consumer technology trade show, runs from January 10-13 and is expected to feature 2,700 exhibitors showing off their latest products and services to about 140,000 attendees.  (Photo by Ethan Miller/Getty Images) Photo: Ethan Miller, Getty Images / 2012 Getty Images