A Guide about the Card Readers

Mifare card reader is a proprietary high tech card which is actually a type of contactless smart reader card or you can say proximity card. There are various forms of mifare cards which can be used these days- some of the major types are:

Mifare Classic card is basically a memory depository device, where memory is divided in to sections as well as blocks with a clear security mechanism for the access control. There are the ASIC based plus have defined computational capacity. The credit goes to the low cost as well as dependability; those cards are used widely for the access control, corporate ID cards, stadium ticketing, transportation, electronic billfold and transportation. You will also find a substitute for Mifare classic i.e. Mifare plus. It actually gives accessible upgrade of the current infrastructures towards the high security. The applicative data management is equal to Mifare classic, but the security management needs the modification of installed reader base. It varies from other Mifare reader.

An HID card reader is a proximity card which looks like any credit card or driver’s license. These cards have embedded information which can activate and open the doors so that the card holder can enter. This card alone cannot access an area because of its limited capability. The card should be combined with the additional system components. The total system of the card works in the combination to give security to a specific area. Other products in the system are card reader, access control panel and computer to control the system. As a whole unit this system functions as a great security officer which reviews the credentials as well as allows the authorized public in the building during particular hours.

You will find specific code embedded in cards which have specific sequence that makes the card really unique. The HID readers only pick up the code format. The reader then transfers coding to control panel where it analyzes to check whether the cardholder is authorized to get in to the area. Some cards do have additional coding that reader takes in whereas most of these cards do not have additional code in these cards. The reader only transfer sequence code to access control panel for the review.

Once the data is received the code is processed by the controller. The very first step of controller processing is analysis of length of the data string and the format of the received code. If coding fits within the specifications which have seen set for door the main controllers starts to assess the facility code also the site code. These should also match system specifications for the continued review of card data.

Once the card matches with the last criteria then the controller assess the number of the card. The number may be authorized for specific dates and times. Once everything matches then the lock relay will soon be activated and the door can be opened. Those who maintain security access system, this can be modified with the help of the computer.