ISSI4442 IC card has three security mechanisms: user password, unique code, solid write. If the password is not checked correctly, the data can not be written and the written data can not be changed once it is written (solidified). Using a unique code as the system used by the IC card logo, to avoid the same type of counterfeit card into the system.
ISSI4442 Contact Chip Smart Card With Designed Printing
Chip Type: ISSI4442
Protocol: ISO7816
Packaging: 200pcs/innerbox,4000pcs/carton,N.W:33kg/carton,G.W:35kg/carton
Packaging Size: 410mm×240mm×330mm or customized
Materials: PVC,PET,ABS
Card Size: ISO standard 85.5mm×54mm
Thickness: 0.76mm-0.84mm
Crafts: Embossing and tipping, thermal printing of serial numbers and name,Scratch-off labels, signature panels, barcodes, magnetic stripes and hot-foil stamping.
Application: public traffic,telecommunication, social insurance, access control, hotel locks,staff attendance,salary management,etc.
ISSI4442IC card function description:
Write protected area (the first 32 bytes) of each byte can be individually write protection, write protection, the content can not be change (ie, solidify data).
The password check correct before all the data are readable, if necessary, the data can be properly encrypted. Check the correct password can be written or modified.
Three bytes of the user password, check the correct itself can be changed, effective to the card until the power up.
The password error counter, the initial value of 3, password check error 1, it is reduced by 1, if the counter value is 0, the card automatically locked, number can only be read out, can not be changed and can no longer check the password; if not zero, there is a password check correct, can be restored to the initial value.
The byte address 21 ~ 26 for the user code, our company can be dedicated for a large user in this world a unique code to use(All cards can not be modified after leaving the factory).
Byte address 0 ~ 5,6 ~ 7 factory has been written by the manufacturers, can not be changed. Pay attention to the password area another address, not 0 ~ 256 bytes.