In association with and linked to Auto Emotion, The Power Plant presents Pulse Front: Relational Architecture 12, a new commission by Montreal-based artist Rafael Lozano-Hemmer. Pulse Front features a matrix of light over The Power Plant and Harbourfront Centre, made with light beams from twenty of the world's most powerful robotic searchlights. The installation is entirely controlled by sensors that measure the heart rates of passersby. Ten metal sculptures with embedded sensors and computers are placed along the harbour where they detect the pulses of people who hold them and convert them into light pulses. Computers also determine the orientation of the beams, recording changes in participants' physical and emotional states. The resulting effect is a visualization of vital signs, arguably our most symbolic biometric, in an urban scale.