Interactive Interior Design for EXACT - It is an interactive video installation that aims to introduce the corporate identity of the client company Exact. The installation can engage interaction between the employees, visitors, clients and other people in the exact building. The design-through-making process involved the user and context research for concept improvement. The final prototype based on the concept “One of us†is made up of a screen, a frame, a telephone, a lamp and a table for tangible interaction as well as sensors and Phidgets. The core technologies used in the interaction design are the MAX/MSP program, Adobe After Effect and Adobe Premiere. The final design satisfied the client’s requirement.