Quick Reference Guide to Access Control Devices
Comprehensive guide explaining the two primary access control configurations found at GridColo facilities: Type 1 (HID + Suprema) and Type 2 (UniFi).
GridColo facilities employ a layered access control system designed to balance convenience with robust physical security. Different facilities use different device ecosystems, but the principles are the same: each door, gate, and checkpoint uses credential-based authentication — and in some cases biometrics — to verify identity before allowing entry.
This guide explains the two primary access control configurations found at GridColo facilities: Type 1 (HID + Suprema) and Type 2 (UniFi). By understanding how each device works and what to expect at each checkpoint, customers, vendors, and visitors can move smoothly through the facility while preserving security.
Type 1 facilities use a combination of HID card readers (similar to the RK40 series) and Suprema biometric devices (such as the FaceStation and fingerprint scanners). These devices are paired with traditional intercom systems at key access points.
Gate – HID Card + PIN
At the site perimeter gate, access is granted by presenting a valid GridColo credential card to the HID reader, followed by entry of a personal identification number (PIN). Both factors must be correct to open the gate. An intercom unit is available for visitors or deliveries needing assistance.
Main Entrance – HID Card + Fingerprint (Suprema BioEntry)
The primary building entrance uses a two-factor authentication system combining a card reader with a Suprema fingerprint scanner. Individuals present their card, then place their enrolled finger on the biometric reader. This prevents credential sharing and ensures that only authorized individuals gain access. An intercom provides direct connection to site security for support or visitor escort requests.
Mantrap Outer Doors – HID Card
The first set of doors in the mantrap requires a valid card swipe. Once inside, the doors will close fully before the inner doors can be used. Interlocks ensure that only one door set operates at a time. An intercom is located here to contact staff if access issues occur.
Mantrap Inner Doors – HID Card + Fingerprint (Suprema BioEntry)
To enter secure data hall areas, individuals must present their card and a fingerprint scan at the inner mantrap doors. This dual authentication step provides the strongest verification at the point of entry to the most sensitive areas. The intercom system provides a direct line to security in case of errors or lockouts.
Type 2 facilities leverage UniFi Access devices for card, PIN, and biometric functions, paired with UniFi intercom systems. The design emphasizes modern, integrated authentication methods such as facial recognition and license plate registration.
Gate – Card + PIN or Registered License Plate
At the site perimeter, individuals can authenticate by presenting a card and PIN at the UniFi Access reader, or by using the license plate recognition system for registered vehicles. Visitors or delivery drivers can contact security via the UniFi intercom located at the gate.
Main Entrance – Card + Facial Recognition (UniFi G3 Flex + Access)
The main building entrance combines card presentation with UniFi facial recognition. Registered users present their card, then stand in front of the facial recognition camera, which verifies identity against an enrolled template. The UniFi intercom here allows visitors to request access or contact site staff.
Mantrap Outer Doors – UniFi Card Reader (G3 Reader)
The outer doors of the mantrap require a valid card presentation at the UniFi Access reader. As with Type 1 sites, interlocks prevent both sets of doors from being open simultaneously.
Mantrap Inner Doors – Card + Facial Recognition (UniFi G3 Reader Pro)
Access to the secure data halls requires dual authentication: a valid card plus successful facial recognition scan. This ensures that even if a card is compromised, only the rightful user can proceed. An intercom station is located here to allow immediate contact with security if needed.
Type 1 Facilities
Traditional intercom systems are installed at the gate, main entrance, and mantrap areas. These connect directly to onsite security or the NOC, allowing staff to provide assistance, verify identity, or remotely release doors.
Type 2 Facilities
UniFi intercoms are used at the gate and main entrance, with UniFi G3 reader devices handling card access at other locations. These intercoms are fully integrated with the access control system for streamlined communication and monitoring.
- All facilities require credential cards for access. Additional factors (PIN, fingerprint, or facial recognition) are used at sensitive checkpoints.
- Interlocked doors at mantraps enforce one-at-a-time passage, preventing tailgating.
- Biometric systems (fingerprint or facial recognition) are used exclusively for security purposes and require user enrollment in advance.
- Visitors must always use the intercom to request entry and remain under escort once admitted.
- By familiarizing yourself with the devices in use at your site, you can move confidently through the facility while helping maintain the high standards of security that GridColo facilities are known for.