Radio frequency identification (RFID) is an abbreviation of Radio Frequency Identification, and its principle is to perform non-contact data communication between the reader and the tag to achieve the purpose of identifying the target. The RFID anti-theft bag refers to a backpack bag made of RFID shielding material. At present, most of the bags are relatively small bags such as the inner compartment of the backpack or a purse or a storage bag. They are made of RFID shielding material. Interlayer bag with anti-demagnetization and anti-electromagnetic RF scanning functions. Most passports, credit cards, and ID cards currently carry RFID microchips, and hackers can use readers to steal this sensitive information from 3 meters away. If you put RFID microchips such as ID cards and bank cards in RFID shielding bags, you can shield their signals from being put out, which can effectively prevent theft of information and protect information and funds.