Gadget Hears What You're Eating

Your Fitbit (or whatever it is the activity-enlightened wear these days) can make a pretty good guess at how many calories you're burning through. And it can do it without any input from you. But if you want to keep track of how many you're putting in, you'll still need to do some work yourself, even if it's only choosing from a menu on an app. Inspired by that asymmetry, State University of New York at Buffalo computer scientist Wenyao Xu and colleagues at Northeastern University in China developed Autodietary, a necklace-like gadget that attempts to tell what you're eating. The device senses sounds from your neck to categorize your meal.