Coolest tech to see at Barcelona's Mobile World Congress

Chief Marketing Officer of Samsung Electronics Europe David Lowes presents the tablet Samsung Galaxy Book during a news conference Feb. 26, 2017, in Barcelona on the eve of the World Mobile Congress official opening. Phone makers will seek to seduce new buyers with even smarter Internet-connected watches and other wireless gadgets as they wrestle for dominance at the world's biggest mobile fair. Lluis Gene, AFP/Getty Images