| 摘要 |
A replaceable printing device component such as a toner cartridge 32 has a radio frequency identification (RFID) memory tag 36 with password protected data areas 48,50,58 to control read and write access to the memory tag 36. The printing device 30 is provided with an interrogator 45 which emits a radio frequency field which provides power to the memory tag 36 via the antenna coil 44. The memory tag 36 provides an encrypted authorisation code 52, which if the printing device 30 determines is valid, enables all the printing functions of the printing device 30. The memory tag 36 utilizes encryption methods to allow only authorised user access to read from or write to selected areas 48,50,58 of the memory tag 36. |
