Swipe cards or magnetic stripe cards work by storing data in a magnetic layer placed on a card. This magnetic layer is capable of data storage by altering the tiny magnetic particles—in case you wondered how your credit card works.
There are two main different types of Access-list namely: Standard Access-list – These are the Access-list which are made using the source IP address only. These ACLs permit or deny the entire protocol suite. ... Extended Access-list – These are the ACL that uses both source and destination IP addresses.
A door entry system is a critical component of your business premises security infrastructure. It serves as a doorbell and intercom to give you control over who enters the site, and at the same time, it acts as a security system for controlling staff access throughout the building.
Without authorization, permissions are deleted, and the card is damaged!
RFID is commonly used in Access Control, using radio-frequency electromagnetic fields to allow the transfer data to identify people of objects without making physical contact.
The cards that the card reader can read are: ID, IC, HID, UHF, dual-frequency cards
If the access control card reader has been working normally and suddenly fails to read the card at a certain moment, the reason may be a power failure, damage to the card reader, or strong magnetic interference. When checking the card reader, you can investigate these reasons one by one. If the above problems are eliminated, the card still cannot be read, or static electricity may be generated after using it for a long time, and this static electricity will cause excessive electricity and cause the access control card reader to not work properly.
In this case, it may be that the access control card reader is installed on the metal because the metal has a shielding function, part of the radio waves emitted by the card reader is shielded by the metal, and the induction slows down. In addition, if the card reader is installed in and out, the above problems will also occur if the distance between the two card readers is too close, and the interference of radio waves will cause slow card reading and short sensing distance.
Damage to the communication converter, a short circuit in the line, and damage to the communication module of the card reader will cause the access control card reader and the software to fail to communicate. If the communication converter is damaged, the possible cause is the quality of the converter or strong static electricity on the communication line. If it is caused by a short circuit, it means that the line is damaged and needs further investigation. If the communication module of the card reader is damaged, it may be due to high power or static electricity on the line.
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