FILE PHOTO: A worker checks on lights at a Casio booth during preparations for the 2014 Consumer Electronics Show (CES) at the Las Vegas Convention Center in Las Vegas, Nevada, January 4, 2014. REUTERS/Steve Marcus
FILE PHOTO: A worker checks on lights at a Casio booth during preparations for the 2014 Consumer Electronics Show (CES) at the Las Vegas Convention Center in Las Vegas, Nevada, January 4, 2014. REUTERS/Steve Marcus