Wearable devices are becoming more popular and being used in various industries like travel and healthcare. Some key uses mentioned are Virgin Atlantic equipping flight attendants with Google Glass to provide flight info to passengers, the Aloft Smart Check-in app allowing hotel guests to unlock rooms with their smartwatch, and the SunFriend device monitoring sun exposure. The document also discusses how wearable technologies could simplify tasks like automatic mileage tracking and expense reporting using a smartwatch and apps. It concludes by a manager noting how wearables could enable more hands-free experiences while traveling using apps like TripIt on Google Glass.