The invention discloses a method and a
system of preventing stealing by counterfeiting or
copying bank cards of card holders. The
system is characterized in that a
bank card is provided with a recess, a lead weight is press-fitted into the recess, the surface of the lead weight is provided with a seal by
pressure casting, a background
server stores account information and seal image data, and an automated teller
machine is internally provided with a camera, a
card reader, a
transceiver and a
comparator; during withdrawal or transfer, the
system performs operations: the
card reader reads the account information of the
bank card, the camera shoots the surface of the lead weight in the bank card to acquire surface image data, the
transceiver reads the corresponding seal image data from the background
server according to the account information, the
comparator compares the surface image data with the seal image data, withdrawal or transfer is allowed if the data are consistent and is avoided if the data are inconsistent. Even after an account number and a
password are stolen, a criminal is unable to steal by counterfeiting the bank card; meanwhile, a protective means of protecting capital security in case of robbery is further provided.