In fact, it is a branded ARM9 compatible chip, which is mainly characterized by customization of the main frequency, interface and on-chip storage unit according to the needs of fingerprint recognition algorithm. Generally speaking, the price of general purpose chips with ARM as the hardware platform is higher, and ARM-compatible chips are suitable for small projects that need to be quickly put into the market and support frequent upgrades. Such projects are actually not cost-sensitive.
2, In 2019, the State Administration of Market Regulation in the quality of smart lock spot check, a lot of smart lock brand M1 card there is a risk of being copied. In fact, the M1 card used by these manufacturers is not encrypted, and the second is the problem of using the simplest M1 card number as the key identification information.