1. Entry through security guard You may be asked to stand or sit at the main entrance of a site. Your main tasks are to check identification and to decide if people are authorized to enter. • Personnel recognition - This is often used at small sites. You let in only people who you recognize. Staff tells you if they are expecting any visitors. You use a special form to write down information about visitors. This method only works if you know each person who enters and if you see each person enter. If your attention is somewhere else or you don’t have time to identify everyone, unauthorized people may enter.