RFID belongs to the automatic identification technology, and its working principle is the reader and the tag between the non-contact data communication, to achieve the purpose of identifying the target, in short, through the wireless radio frequency way for non-contact two-way data communication.

Anti-theft security wallet, the main structure is mainly composed of a purse, anti-theft inner structure, positioning device, card area, paper money, coins area and other parts, the main structure composed of the wallet leather, artificial leather, lining material, anti-theft inner material composed of the tin shielding materials, NFC shield, polyester PET aluminum foil composite materials and RFID tips, warning devices, the main body in the purse structure according to the principle of Faraday cage set among electrostatic shielding layer, card issuing area set up double security charge components, notes and COINS were set easy to use, composed of electrostatic shielding layer and anti-theft when card be swiped, the components inside the shielding structure can prevent the purse card was NFC close exchange of data such as identification, implementation of the subjective near-field shielding, paid to improve safety performance for the purse.