Radio Frequency Identification (RFID) refers to a wireless system comprised of two components: tags and readers. The reader is a device that has one or more antennas that emit radio waves and receive signals back from the RFID tag. Tags use radio waves to communicate their identity and other information to nearby readers.
RFID Devices for Employee Management
Organizations use RFID technology to restrict access to office premises (access control) and also to record employee attendance (time attendance). RFID readers are installed where access should be recorded or restricted, and RFID tags are issued to employees who are authorized to access the location.