Unmanned stores are not exactly a new concept, but they're becoming increasingly popular, especially with the addition of new smart technologies. Local brands Octobox, OMO Store and Pick & Go are already using university campuses as testing ground for pilot automated stores. Among them is a 24/7 store opened in August at the National University of Singapore's (NUS) University Town, a second is to open in September at NUS's School of Computing and a third in October at the Singapore University of Technology and Design.