What is the purpose of a Sally port?

The purpose of a Sally port is primarily to allow only one of two access points to open at a time. This design ensures that security is maintained while moving individuals or items in and out of a facility. By having only one door open at a time, the Sally port prevents unauthorized entry or escape, significantly reducing opportunities for breaches in security. This controlled access is especially critical in correctional settings where managing the movement of inmates and staff is essential to maintaining safety and security.

While providing a secure area for inmate processing could be a function of a Sally port, it is not its primary definition. Additionally, facilitating emergency evacuations and serving as a waiting area for visitors do not align with the fundamental purpose of a Sally port, which is strongly tied to security protocols.