These 3D-printed glasses are interesting for reasons that go beyond being created with additive manufacturing. Researchers from the University of Passau created these 'Diet Eyeglasses' as a way to help people lose weight and eat healthier.
These glasses are part of the WISEglass project, which is centered around smart eyewear systems. Although they don't look it, the 3D-printed glasses are embedded with technology and electromyography sensors that touch the area directly behind the ears. The spot where the arms of the glasses touch the skin are able to pick up on contractions of the facial muscles that are used during chewing.
The smart glasses are able to differentiate between different kinds of movements, including coughing, drinking water and speaking, as well as foods of different textures like bananas and cookies. This data helps to inform what kind of a diet the wearer has and holds them accountable for everything they eat.