10-35 (Control procedures fui casu receipia, box office at the entrance, receives cash from customers and operates a machine that e serially numbered tickets. To gain admission to the theater, a customer hands the ticket a doorperson stationed some 50 feet from the box office at the entrance to the theater lobby The doorperson tears the ticket in half, opens the door, and returns the stub to the custome The other half of the ticket is dropped by the doorperson into a locked box.