How would you like to feel? What if you could make it happen with a touch of a screen? What would you do with complete control over your own emotions and those of the people around you? The Changing Room is a custom software installation and performance that allows participants to select one of hundreds of emotions, evoking that emotion in them and everyone in the space through a layered environment of light, visuals, sound, text, and interaction exhibited over a multi-level, many-sided display. Dealing with themes of surveillant architectures, social technologies, and smart homes, the piece simultaneously invades and cares for the emotions of passersby. This project was created as part of the TRANSMIT³ Residency, presented by Ars Electronica and QUT.