ACCESS CONTROL SYSTEMS
Physical access control is a mechanical form and can be thought of physical access to a room with a key.
The line is often unclear whether or not an element can be considered a physical or a logical access control.
When physical access is controlled by software, the chip on an access card and an electric lock grants access through software (see checklist: An Agenda for Action for Evaluating Authentication and Access Control Software Products), which should be considered a logical access control.
That being said, incorporating biometrics adds another layer to gain entry into a room. This is considered a physical access control. Identity authentication is based on a person’s physical characteristics.