Joe, a security administrator, is concerned with users tailgating into the restricted areas. Given a limited budget,
which of the following would BEST assist Joe with detecting this activity?

A.
Place a full-time guard at the entrance to confirm user identity.

B.
Install a camera and DVR at the entrance to monitor access.

C.
Revoke all proximity badge access to make users justify access.

D.
Install a motion detector near the entrance.

Explanation:
Tailgating is a favorite method of gaining entry to electronically locked systems by following someone through
the door they just unlocked. With a limited budget installing a camera and DVR at the entrance to monitor
access to the restricted areas is the most feasible solution. The benefit of a camera (also known as closedcircuit television, or CCTV) is that it is always running and can record everything it sees, creating evidence that
can be admissible in court if necessary.