How to Prevent Tailgating and Piggybacking at Warehouse Entrances

\One of the most common security vulnerabilities at any warehouse facility is unauthorized entry through tailgating and piggybacking. Tailgating happens when an unauthorized person slips through a secure door immediately behind an authorized employee, often without that employee even noticing. Piggybacking is similar, but the authorized person is aware and deliberately holds the door open for someone who hasn't been cleared. Both are serious risks that can lead to theft, workplace accidents, or worse. As a security guard, you are the first and most important line of defense.

Stay Alert at All Times

The entrance is your primary responsibility. Position yourself where you have a clear, unobstructed view of the door and the surrounding area. Avoid distractions like your phone or lengthy conversations. Watch for people who linger near the entrance waiting for someone to badge in, or individuals who walk unusually close behind an authorized employee.

Enforce a One-Person, One-Badge Policy

Make it clear to all staff and visitors that every person entering the facility must badge in or be individually signed in, no exceptions. Even if two employees arrive together, both must scan their credentials separately. Post visible signage at the entrance reminding staff of this policy, so it becomes the expected norm rather than an awkward confrontation.

Use Physical and Technical Controls

Wherever possible, work alongside physical barriers that support your role. Mantrap vestibules, turnstiles, and door sensors that alert when multiple people pass on a single credential are all highly effective. If your facility has these in place, monitor the alerts closely. If you notice these systems are being bypassed or malfunctioning, report it to your supervisor immediately.

Challenge Unfamiliar Faces Politely but Firmly

If you don't recognize someone, it is your job to stop and verify them, even if they are dressed in a uniform or carrying equipment. A professional challenge sounds like: "Hi, I don't think we've met, could I see your ID and verify your access?" Most legitimate visitors will understand. Anyone who reacts with hostility or tries to pressure you should be treated as a red flag.

Educate and Remind Staff Regularly

Piggybacking often happens not out of malice, but out of politeness, employees hold doors open for colleagues out of habit. Work with management to regularly remind all staff that holding the door for others, however well-intentioned, is a security violation. When employees understand the "why" behind the policy, they are far more likely to follow it.

Document and Report Every Incident

Any attempted or successful unauthorized entry must be logged immediately. Record the time, location, description of the individual, and what happened. This documentation helps management identify patterns and strengthens the case for better physical controls if needed. Never assume an incident is too minor to report.

Preventing tailgating and piggybacking is not about being unfriendly, it is about maintaining a safe and secure environment for everyone inside the facility. Consistency, alertness, and clear communication are your most powerful tools on the job.

By Chris Jones