Painted-on Coating Transforms Walls into Sensors and Interactive Surfaces

Walls often make up more than half of indoor surface area, especially in residential and office buildings. In addition to delimiting spaces, both for functional and social purposes, they also hide infrastructure such as wiring and HVAC. However, they are generally inactive structural elements, offering no inherent interactive or computational abilities (other than at small attached silos, e.g., thermostats and light switches), and thus present an opportunity for augmentation, especially considering their ubiquity.