U.S. Secretary of State John Kerry appears on a tablet for a device that helps notify of a person's level...
US Secretary of State John Kerry appears on a tablet for a device that helps notify of a person's level of fatigue while driving a car as he tours the China - US Young Maker Competiton at the US - China High Level Consultation on People to People Exchange at the National Museum in Beijing, China June 7, 2016. REUTERS/Saul Loeb/Pool