Security (Core 2)

A small space with two interlocking doors where only one door can open at a time, forcing entrants to authenticate individually and preventing tailgating.

Short, sturdy posts placed outside a building to stop vehicles from ramming or driving into the entrance.

It reads an employee's ID badge (magnetic stripe, RFID, or smart card) and unlocks the door only for authorized credentials, while logging each entry.

Metal objects such as weapons — it is a walk-through or handheld metal detector used for entrance screening.

A small hardware token carried on a keychain that unlocks doors via RFID/NFC or generates one-time codes for authentication.

Human judgment — guards can verify identities, challenge suspicious behavior, respond to incidents, and adapt in ways automated systems cannot.