Describe the concept of 'access control' in security.

Access control is a vital concept in security that focuses on regulating who is allowed to enter or exit a property. It involves implementing various measures and systems to ensure that only authorized individuals have access to specific areas, thus enhancing the safety and security of the premises. This can include physical barriers such as gates or locks, as well as technology-based solutions like key cards, biometric scanners, or access control software.

The purpose of access control is to protect sensitive areas from unauthorized access, preventing potential threats and securing valuable assets and information. It is integral to maintaining a secure environment in various settings, including government buildings, corporate offices, and any locations where controlled access is necessary.

While the other options mention various aspects of employee management and technology, they do not accurately define access control in the context of physical or digital security. Access control specifically pertains to the governance and management of entry points within secured spaces.