US Patent 9189021 Wearable food nutrition feedback system

A see-through, head mounted display and sensing devices cooperating to provide feedback on food items detected in the device field of view. Feedback can include warnings based on personal wearer needs, general nutrition information, food consumption tracking and social interactions. The system includes one or more processing devices in communication with display and the sensors which identify food items proximate to the apparatus, determine feedback information relevant to a wearer of the apparatus; and render feedback information in the display.