What Security Guards Can and Can’t Search at Government Buildings and Courthouses

You expect a security check when entering a courthouse. A metal detector, a quick bag inspection, perhaps a few questions about something inside your belongings. Most visitors accept these steps as part of the routine. But do security guards have the right to search you?

Generally, yes, but there are limits. The rules determine what a guard can inspect, how far a search can go, and when additional justification is needed. Understanding those boundaries helps visitors know what to expect and helps security personnel carry out their duties without overstepping their authority.

Is Security Screening at Courthouses and Government Buildings Legal?

The Fourth Amendment protects people against unreasonable searches and seizures. Generally, government officials need a warrant or a recognized legal exception to conduct a search. Courthouse security screening falls under one such exception: the administrative search doctrine, which is closely associated with the special needs exception.

A key decision in this area is McMorris v. Alioto (1978). The Ninth Circuit upheld security screening at San Francisco’s Hall of Justice, including magnetometer checks and limited inspections of bags and parcels. The court recognized that protecting sensitive government facilities from weapons and violence can justify limited searches as a condition of entry.

Three principles help explain when government building security checks are constitutionally reasonable.

Purpose

The primary purpose of administrative screening is to prevent weapons and other dangerous items from entering a facility. Guards conduct these checks to protect visitors, employees, and court personnel, rather than to investigate suspected criminal activity.

A security screening program designed around a safety concern may qualify as an administrative search. A search conducted primarily to gather evidence for a criminal investigation raises different Fourth Amendment concerns.

Consent

Courts have recognized that visitors may be required to submit to limited security screening as a condition of entering certain government facilities. Visitors can generally decline screening, but they may then be denied entry. The scope of the inspection must still comply with constitutional requirements.

Proportion

The level of intrusion must be reasonable in light of the security threat and the purpose of the screening. A metal detector or inspection of a bag’s compartments may be justified as part of routine courthouse security. More intrusive procedures require closer scrutiny.

For example, asking someone to open a bag to check for prohibited items serves an identifiable security purpose. Browsing through personal photographs or unrelated digital files would ordinarily fall outside that purpose.

What Security Guards Can and Can’t Search

Think of screening as one question a guard is allowed to ask: is this person carrying something dangerous? Anything that helps answer it is a fair game. Anything that doesn’t is on shaky ground.

The table below shows how that situation plays out at a typical entrance:

Two additional considerations are also important. First, screening procedures should follow established and neutral rules rather than arbitrary decisions based on a visitor’s appearance or a guard’s personal suspicions. Second, the exact requirements can vary by state, court system, and facility. Posted security policies and local court rules help determine what visitors should expect.

When Security Screening Becomes an Unreasonable Search

A security checkpoint comes with specific responsibilities and equally specific limits. Guards can screen visitors for weapons and prohibited items, but they cannot treat every inspection as permission to investigate someone’s private life.

Below are five situations where courthouse security searches can raise legal concerns.

Turning a Security Check into a Criminal Investigation

Administrative searches must serve a legitimate security purpose, such as preventing weapons from entering a courthouse. A guard who uses a routine bag inspection to look for drugs or other evidence of criminal activity moves beyond that purpose.

The distinction matters. A search designed to protect a government facility may qualify as an administrative search. An inspection conducted as a pretext to investigate suspected wrongdoing raises separate Fourth Amendment concerns.

Digging Past the Purpose

Even when a search begins lawfully, its scope is important. Guards should inspect only what is reasonably necessary to identify weapons and other prohibited items.

Consider State v. Griffith (2019), a case involving a courthouse security guard who removed a soft item from a visitor’s coat pocket during screening. The visitor later challenged the search after the item turned out to contain methamphetamine. The court sent the case back for further fact-finding to determine whether the guard’s actions complied with the courthouse’s screening policy.

The key issue was whether the guard had a legitimate reason to remove the item as part of a weapons search. Curiosity alone wasn’t enough.

Conducting Pat-Downs Without Following Screening Procedures

A pat-down is more intrusive than walking through a metal detector or having a bag inspected. That doesn’t make every pat-down unlawful, but guards must follow the applicable screening procedures and respect the limits of the search.

Inspecting Private Documents and Digital Content

A security guard may need to inspect a laptop bag or ask a visitor to remove a prohibited item. So, can a security guard search your bag? Yes, but that doesn’t ordinarily justify reading personal documents, browsing photographs, or opening private messages. Checking a laptop for a prohibited physical item serves a different purpose from scrolling through its files.

Detaining Visitors Beyond the Screening Process

Security guards generally have limited authority at an entry checkpoint. They can enforce screening requirements and refuse entry to visitors who decline required checks. Detaining someone, however, raises a separate legal question. A facility’s post orders can outline procedures, but they cannot independently grant powers that the law does not provide.

The further an inspection moves from identifying potential threats toward investigating someone’s private affairs, the more difficult it becomes to justify under the administrative search doctrine.

Do Security Guards Have the Right to Search You?

It depends on two things: who the guard works for and what kind of property the guard is standing on.

At a private business such as a mall or office tower, a guard usually searches only with your consent, which the business can make a condition of entry. The Fourth Amendment generally restrains the government rather than private parties.

At a courthouse or government building security, the guard may be a private contractor who is nonetheless running a government screening program. Courts often treat that as government action, which is why constitutional limits tend to apply. The federal system shows how this works. Court Security Officers are contract guards procured by the U.S. Marshals Service, and they are armed. They screen visitors at nearly 420 federal court facilities.

What if you say no? You can. The guard can then say no right back, and you stay outside. Timing matters, though. Some courts hold that once you present yourself at a checkpoint, you can’t withdraw consent midway if screening staff choose to search. Decide before you reach the tray.

How Courthouse Security Works in Practice?

Before you reach the courtroom, you have to get past the checkpoint. Posted signs explain what you can bring inside, what screening involves, and what happens if you refuse inspection. Security staff use these instructions to keep entry checks organized and consistent.

Most visitors go through the same basic screening process. However, court employees, attorneys, and law enforcement officers may have separate entry procedures or exemptions under local court rules.

At the checkpoint, the equipment does much of the initial screening. Walk-through magnetometers detect metal objects, X-ray scanners reveal what’s inside bags, and handheld wands help guards investigate alarms. Some facilities also use trace detectors to identify potential explosive materials.

What Happens When a Guide Finds Something Suspicious?

A prohibited item doesn’t always signal a serious threat. Someone might bring a pocketknife by mistake or carry an item that simply isn’t allowed inside. The guard’s response depends on what they find.

For harmless prohibited items, visitors may be asked to return them to their vehicles, surrender them where permitted, or leave the premises. If an item suggests a threat, guards should follow emergency procedures and notify law enforcement rather than attempt to investigate or handle the situation themselves.

Whatever the outcome, accurate incident reports are important. Recording what was found, how the visitor responded, and what action followed creates accountability for the guard, visitor, and security provider.

What Agencies Should Expect from a Security Provider?

Government security contracts come with responsibilities that extend beyond staffing an entrance. Agencies need a provider whose officers understand search limits and follow established procedures.

Listed below are the essentials to look for:

The Bottom Line

Courthouse screening is legitimate, bounded, and, when done well, almost invisible. The gap between a smooth entrance and a courtroom challenge is rarely the metal detector. It’s the person holding the wand.

If your agency or facility needs guards who understand both the post and the law behind it, reach out to Security Guard Solutions Inc. (SGS). Our security guard services can help you scope staffing for government security contracts.