Is Your Business Protected From Unauthorized Access?
Worried about someone entering your business without permission?
Unsecured doors, shared keys, open access points, and outdated security systems can create unnecessary risks.
Quick answer: Businesses can reduce unauthorized access risks by combining access control, intrusion detection, video surveillance, visitor management, and security monitoring.
Do You Have These Security Gaps?
- Employees share physical keys.
- Former employees still have building access.
- Visitors can enter restricted areas.
- Side or rear doors are unsecured.
- Loading docks are not properly controlled.
- You have limited visibility around entrances.
- Access permissions are difficult to manage.
How Does Access Control Prevent Unauthorized Entry?
Access control lets you decide who can enter specific doors or restricted areas.
Businesses can use key cards, mobile credentials, PINs, electronic locks, or biometric security.
See access and door entry systems.
847.353.7200Email Us : service@sentrysecurity.com – sales@sentrysecurity.com
What About Former Employees?
Physical keys can be difficult to track. Electronic access control allows credentials to be changed or removed when an employee, contractor, or other authorized user no longer needs access.
For higher-security applications, see biometric security.
Can Security Cameras Help?
Yes. Cameras can provide visibility around entrances, parking areas, loading docks, restricted areas, and building perimeters.
Explore commercial video surveillance.
What If Someone Enters After Hours?
Intrusion detection can help identify unauthorized activity when a property is closed or an area should be unoccupied.
Learn more about intrusion detection and security monitoring.
How Can You Control Visitors?
A visitor management system can help register visitors, contractors, and vendors while providing temporary or restricted access where appropriate.
See visitor management solutions.
Can Security Systems Work Together?
Yes. Access control, cameras, intrusion detection, and visitor management can be integrated where compatible.
This can give security teams more information about who entered an area and what happened around the entrance.
Learn more about integrated security systems.

Quick Unauthorized Access Checklist
- Review every exterior entrance.
- Remove unnecessary access permissions.
- Secure loading docks and secondary doors.
- Review visitor procedures.
- Check camera coverage.
- Test intrusion detection.
- Review after-hours access.
- Schedule regular system maintenance.
Frequently Asked Questions
What is the best way to prevent unauthorized access?
A combination of access control, intrusion detection, video surveillance, visitor management, and monitoring can provide layered protection.
Can access control prevent unauthorized entry?
Access control can restrict entry to authorized users and specific areas, but no security system eliminates every risk.
Can cameras identify unauthorized access?
Cameras can provide visual information about activity at entrances and other areas. Their effectiveness depends on placement, lighting, image quality, and system configuration.
Should businesses use visitor management?
It can be useful for businesses that regularly receive customers, contractors, vendors, or other visitors.
Worried About Unauthorized Access?
Sentry Security can evaluate your entrances, access control, cameras, alarms, and visitor security needs.
847.353.7200Email Us : service@sentrysecurity.com – sales@sentrysecurity.com
Related Security Services
Explore remote access management, turnstiles, Security as a Service, and service and support.
For complete planning, see system design and engineering.
Final Takeaway
Unauthorized access can happen through more than the main entrance. Businesses should review every door, gate, visitor area, loading dock, and restricted space.
Layered security using access control, video, intrusion detection, and visitor management can provide stronger control over who enters your property.
Ready to Improve Your Access Security?
Request a Security Quote or call 847.353.7200.