SeeGrid does something similar, but without having to modify the warehouse at all: http://www.seegrid.com/ http://www.seegrid.com/ It was started by CMU Robot

SeeGrid does something similar, but without having to modify the warehouse at all: http://www.seegrid.com/ http://www.seegrid.com/ It was started by CMU Roboticist and futurist Hans Moravec, as the culmination of his life's work to date.