Episode 2, layer 2: Entrance
The entrance
Past the fence, the front door is where a site decides who gets in, and why that's harder than it looks.
Narration is synthetic, generated from the creator's own voice.
Layer 2 of 8: Entrance
In this episode
Why visits are arranged in advance. How access control checks something you have, something you know and something you are. How a mantrap lets one person through at a time. Why getting inside doesn't mean going everywhere. And the rule security can never break: doors keep people out, never in.
Three things to take away
- The weakest point is often a polite person, not a lock.
- Access can be checked by what you have, what you know and who you are.
- Doors keep people out, never in.
Who works here
- Security officers, reception and control room operatorsThey are the first people every visitor meets, and the ones watching day and night. They check identities, issue passes, monitor cameras and alarms, and respond when something isn't right.
- Access control techniciansThey install, program and maintain the readers, locks and interlocked doors that decide who gets through.
- Door and lock specialistsThey fit and service the doors themselves: frames, locks, closers and emergency exit hardware.
- Site managersThey decide who is allowed where, and are accountable for the site as a whole.
The Careers Guide shows how people get into each job.
Documents
- Entrance and mantrap layoutIn preparation
- Access zonesIn preparation
Drawings for this layer are published in the Library as they are ready.
Sources
Each source is listed with the claim it supports.
Access can be checked by something you have, something you know and something you are.
Digital Identity Guidelines, SP 800-63-4 (glossary entry: authentication factor), NIST, July 2025
Doors on escape routes use exit hardware that lets people out quickly and safely.
EN 1125 (panic exit devices) and EN 179 (emergency exit devices), for use on escape routes, CEN, 2008