The preparations were top-secret. From Thursday through the end of the following week, Apple completely took over Moscone. Backstage, it built an eight-by-eight-foot electronics lab to house and test the iPhones. Next to that it built a greenroom with a sofa for Jobs. Then it posted more than a dozen security guards 24 hours a day in front of those rooms and at doors throughout the building. No one got in without having his or her ID electronically checked and compared with a master list that Jobs had personally approved. The auditorium where Jobs was rehearsing was off limits to all but a small group of executives. Jobs was so obsessed with leaks that he tried to have all the contractors Apple hired — from people manning booths and doing demos to those responsible for lighting and sound — sleep in the building the night before his presentation. Aides talked him out of it.