Access Control Readers

Access Control Readers are necessary for any system to function. Readers, also called interrogators, are devices that transmit and receive radio waves in order to communicate with RFID tags. RFID readers are typically divided into two distinct types – Fixed RFID Readers and Mobile RFID Readers. Fixed readers stay in one location and are typically mounted on walls, on desks, into portals, or other stationary locations. An integrated RFID fixed reader is a reader with a built-in antenna that typically includes one additional antenna port for the connection of an optional external antenna as well.

RFID Access control systems use LF, HF, and UHF frequencies depending on the type of system. UHF could be used for building access control, but the security level would drop dramatically because of one of the primary reasons UHF tags are so widely used – longer read distances. In the case of building access control, opening a door from 10 to 20 feet away can be a problem. Employees walking around with UHF enabled cards could open doors at various distances, allowing most anyone in.