Patent ID: 8593851

Claim:
A verification system preventing a non-normalized product from being used, the system comprising a master apparatus and a slave apparatus, and performing unidirectional or bidirectional verification between the master apparatus and the slave apparatus, wherein: the master apparatus has a master memory capable of storing first key code in a non-volatile manner; and the slave apparatus has a slave memory capable of storing first key code in the non-volatile manner, wherein at least the slave memory is one of the group consisting of non-volatile logic circuit and ferroelectric memory, and both of the non-volatile logic circuit and ferroelectric memory use hysteresis characteristics of ferroelectric components, and wherein the master apparatus reads data out from the master memory and the slave memory to perform verification while an action is initiated; the master apparatus writes a second key code different from a first key code into the slave memory after verifying the first key code, and then reads data out from the slave memory to perform verification immediately; and the master apparatus determines whether the slave apparatus is a normalized product or a non-normalized product.