RFID belongs to a technology group called Automatic Identification and Data Capture (AIDC). AIDC methods automatically identify objects, collect data from them and transfer this data directly to computer systems without human intervention.
To achieve this, these techniques use radio waves. Simply, these systems consist of three parts: an RFID tag or smart tag, a reader and an antenna. Labels include an integrated circuit and an antenna. We use this to send data to the RFID reader. The reader then converts the radio waves into a more useful data format. The information collected from the tags is then passed through one communication interface to a host system. There we can store the data in one place. database to be able to analyze later.