Each key in the production process will be given a unique 32 bit serial number. This number may be used for example to identify the key.
Below are the organization of memory, and laid her TeleKlucz areas
| Address |
0x00...0xFB | 0xFC | 0xFD | 0xFE | 0xFF |
| Area |
area of memory available for user |
serial number - memory area (only read) | |||
Serial number is to read the addresses of memory cells 0xFC, 0xFD, 0xFE, 0xFF (in order from youngest to oldest byte).

