The world’s largest tech fair returns to Las Vegas this week, with several new virtual reality headsets, wacky robots, smart health gadgets, and plenty of weird and wonderful gadgets.

CES, formerly known as the Consumer Electronics Show, has in recent years expanded its reach well beyond consumer products, and a large part of the event is now about innovations in the automotive industry and digital health.

This year’s theme is human security, with a focus on innovations that can help solve the world’s biggest challenges, such as access to healthcare, clean air, clean water and food.

“I think purposeful technology is a great way to think about it; also technology for good and improve lives,” said Steve Koenig, vice president of research at Consumer Technology…