Biomedical Optics Express

Mock up of a calorie counting device GE Research has developed a prototype of a microwave that could someday measure calories in the foods that a user warms up, according to a report from MIT Technology Review.

As the makers of wearable sensors continue to push the boundaries of what those sensors can track, new research suggests that a device worn on the wrist could some day track hydration, pulse, and even blood glucose non-invasively.