San José Semaphore, by artist Ben Rubin, is a permanent public artwork commissioned by Adobe Systems Incorporated in collaboration with the City of San Jose’s Office of Cultural Affair’s Public Art Program. Located within the top floors of Adobe’s Almaden Tower headquarters in San José, California, San José Semaphore is a multi-sensory kinetic artwork that illuminates the San José skyline with the transmission of a coded message. Cracking the coded message is posed as a challenge for the public. San José Semaphore’s four ten-foot wide illuminated disks rotate every 7.2 seconds, engaging viewers with a steady, glowing, and purposefully moving presence. The artwork’s illuminated disks perform a kind of mechanical dance as a method of communication. A low-power radio broadcast provides a soundtrack that is audible within 2-3 blocks of the Almaden Tower on AM 1680. An online simulcast provides a way to see and hear the piece remotely.