eat2pic: An Eating-Painting Interactive System to Nudge Users into Making Healthier Diet Choices

Fig. 1. By transforming eating into a task of progressively coloring a landscape projected onto a screen, the eat2pic system encourages users to eat more slowly and maintain a healthy balanced diet. The eat2pic system is composed of a calm sensing component based on a sensor-equipped chopstick (A) and visual feedback components using two types of digital canvases (C, E). The colors of the foods consumed by the user are shown on one part of a landscape displayed on two digital canvases to illustrate a single meal and the food consumed in a week as digital paintings generated by an automated system. The one-meal eat2pic (B, C) guides a user’s behavior through a single meal with real-time feedback, whereas the one-week eat2pic (D, E) guides a user’s food choices and eating behaviors with longer-term feedback accumulated over a full week.