Charles Willson travels from his home in Napa, California, to San Francisco and New York City every week for work, but in a way he never really leaves. When he’s across the country or even in the air, a bevy of smart technology systems ping him with updates on his iPhone and iPad. "I’m on a flight and it’s lighting up, saying, hey, somebody’s walking down your walkway," Willson says. He can immediately pull up his Canary or Dropcam cameras to take a look. "It’s probably the UPS man," he says with a laugh.