The use of access control cards is a vital part of organizations and businesses that have restricted entry to certain areas or restricted sections of a building or establishment. They are also used to prevent unauthorized access by employees. There are several types of these cards, which differ in terms of their functions. The most common cards include magnetic swipe cards, key cards, reader cards, and card readers. Each has its specific purpose, so one must choose the appropriate type of card for their needs.
Magnetic stripe cards are commonly used today. They are usually used in casinos and other places where one needs quick access to a particular area. They are used with a bar code or magnetic strip and contain strips of magnetic material on the top and bottom. Once read by the card reader, these strips are interpreted by the reader as a specific code or series of numbers. If the reader cannot read the card, an alarm is set off, signaling that they are not authorized into the restricted area.
On the other hand, Keycards are unique in the sense that they contain a coded plastic key that, when used, allows access to certain areas, like a restaurant or a secure office. These cards may also include a microchip, which serves as an identification system. The reader reads the coded print and, using the appropriate decoder, determines the code that matches the number written on the card.
Readers are access control devices commonly used in offices and other commercial establishments that do not have security systems. They either require a manually installed card reader or, if automatic ones are installed, the access can be immediately disabled with a code given by the controller. They are also helpful in controlling access in mobile facilities, like cruise ships.
Security cards are another classification of ID control cards. These cards function differently from ordinary identification cards. Instead of using a bar code or a magnetic code, they use biometrics, fingerprint recognition technology, and other security-based technologies to determine authorized entry. Some biometric systems work using retinal scans, iris patterns, or hand geometry. Others use voice recognition systems or voice recognition software.
Most often, access control cards are used for high-security facilities, particularly those that require card readers to authenticate visitors and take measures against fraud. However, these devices are also used to determine whether an employee or visitor is authorized to enter restricted areas. Authorized employees will wear a card or a badge and only be allowed into specific areas, while unauthorized visitors will be turned away or given a trespass notice. They may also be required to show their card at the front desk when making a payment or asking for special services.
