Di solitu in u sistema di cuntrollu di accessu, u numeru di carta 8-bit hè wiegand 26-bit output, u numeru di carta 10-bit hè wiegand34-bit output.
Per esempiu, stampa nantu à una carta:
0013961168 10-numeru di carta di bit,
o
213 02000 3+5 8-numeru di carta di bit.
10-numeru di carta di bit 0013961168, cunvertisce in esadecimale is 00 D5 07 D0.
8-numeru di carta di bit 213 02000, u primu 3 cifre 213 converted to hexadecimal is D5, the last five digits 02000 converted to hexadecimal is 07 D0.
Dunque, the rules can be found: Primu, the 10-digit conversion to hexadecimal is 4 bytes, the first byte does not need, the second byte is converted to the first 3 digits of the 8-bit card number, the third and fourth the bytes are converted together into the last 5 digits of the 8-bit card number.
Excel formula=(MOD(X,256*256))+(MOD(INT(X/(256*256)),256)*100000).
It can be seen from the above that the 10-bit card number in the access control attendance system can be converted into an 8-bit card number by an algorithm, and the 8-bit card number is difficult to restore to a 10-bit card number.
Most of the access control attendance systems developed and produced by Seabreeze Smart Card Co.,Ltd are compatible with wiegand26 and wiegand34, è u software pò ancu sceglie liberamente u numeru di carta di 8-bit o l'operazione di u numeru di carta di 10-bit.
(SeabreezeRFID)