Shift handover: the weakest point in a guard shift

In security work, changeover is a built-in weak point. The officer finishing is tired and wants to leave; the one arriving does not yet know what has happened. Without a procedure, that gap runs for tens of minutes at a time, two or three times a day.

Why changeover is vulnerable

Three reasons come up repeatedly. First, information passed by word of mouth gets dropped: a small detail such as "an unfamiliar car parked at the rear gate twice this afternoon" never reaches the next shift unless it is written down. Second, while the two officers are talking to each other, nobody is actually watching the site. Third, responsibility becomes blurred: if a loss is found just after changeover, it is hard to establish which shift it occurred on.

What a handover should cover

• A handover log, on paper or electronic, signed by both the outgoing and the incoming officer.
• The overall picture of the shift just ended: anything unusual, anyone entering or leaving out of hours, anything still being watched.
• A count of assets and equipment handed over: keys, radios, torches, logbooks and devices, against a fixed list.
• Technical status: which cameras are down, which lights are out, which doors do not lock properly, any fault on the barrier.
• Unfinished work and any client request not yet closed out.
• The exact time of handover, to the minute.

Overlapping shifts

A common and effective approach is to overlap the two shifts briefly, rather than having one officer leave exactly as the other arrives. During the overlap, one keeps watching the site while the other reads the log and counts the equipment. The site is never left unwatched.

Record the things that seem not worth recording

Many serious incidents begin as small details that repeat: the same stranger asking for directions three days running, the same lock jamming more than once, a side door that occasionally fails to close fully. Each one alone is harmless, but recorded consistently across shifts they become a visible pattern. The handover log is where that pattern shows up.