Access control and visitor management systems are designed to control access for employees, contractors and visitors to sites of all sizes in all environments. Utilising multiple technologies such as proximity tokens, PIN entry keypads, swipe cards and sophisticated biometric devices, systems can be designed around existing hardware to provide an effective solution for a single site or multiple sites. These systems can range from very basic one door entry exit systems to fully computerised systems which can monitor a whole building and can be programmed for a large range of operations.