It is a qualifying device at various points to control the passage of people and vehicle into or out of an area or structure. It limits access to a building to people who have authorization to enter through selected points. In short, it can control WHO goes WHERE & WHEN. Access Control readers may be a standalone units controlling one door each, or in larger System may be connected to a door controller which is linked to PC Administration.
The basic components of an Access Control are Electro Magnetic / Mechanic lock, Proximity Card Reader, Key pad, Controllers, etc.,
BIOMETRIC is an identification which uses some unique physiological or behavioral characteristic, not shared by any other individual, to positively identify an individual.
All biometric devices work by matching an individual’s features to the one recorded in the device’s memory. That individual’s record is commonly distinguished by the use of a PIN (Personal Identification Number). This one-to-one comparison mode of operation is known as verification of identity of the “verify” operational mode. The user must identify him / herself to the device by way of a personal number or card so that his or her identity may also be corroborated by the device.