<aside> <img src="/icons/sign-out_gray.svg" alt="/icons/sign-out_gray.svg" width="40px" /> An Access Control Vestibule is a double-door system that is designed with two doors that are electronically controlled to ensure that only one door can be opened at a given time

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These access control vestibules can also help prevent piggybacking and tailgating

• Piggybacking
  • Involves two people working together with the one person who has legitimate access intentionally allows another person who doesn’t have proper authorization to enter a secure area with them
• Tailgating
  • Occurs whenever an unauthorized person closely follows someone through the access control vestibule who has legitimate access into the secure space without their knowledge or consent

The key difference between Piggybacking and Tailgating:

• Piggybacking uses social engineering to gain consent of the person with legitimate access
• Tailgating doesn’t use or obtain the consent of the person with legitimate access

Access control vestibules are usually integrated with electronic badges and operated by a security guard at the entrance to a secure facility or office building

These badges contain:

• RFID (Radio-Frequency Identification)
• NFC (Near-field Communication)
• Magnetic strips

Security guards are often at access control vestibules because they provide:

• Visual deterrent
• Assistance
• Check identity