Capacitive multi-touch displays were popularized by Apple's iPhone in 2007. CERN started using multi-touch screens as early as 1976 for the controls of the Super Proton Synchrotron. The origins of multitouch began at CERN, MIT, University of Toronto, Carnegie Mellon University and Bell Labs in the 1970s. In computing, multi-touch is technology that enables a surface (a touchpad or touchscreen) to recognize the presence of more than one point of contact with the surface at the same time.