You've probably heard a lot about Google Glass, the mobile wearable technology created by Google that enables users to capture images and video, to receive email, SMS messages, and social media updates, and to find directions or browse the Internet. Although it's arguably the most famous, it's only one of many new mobile devices that has emerged in a field of wearable cameras, smart watches, and wristbands. We can all imagine how to use these devices in our daily lives, but what about inside a museum?