Set a PIN to protect the address book. You are prompted to enter the correct PIN to register, edit, or delete destinations.
How to access the option
[
] (Menu) -> <System Settings> -> <Restrict TX Function> -> <Address Book PIN>
] (Menu) -> <System Settings> -> <Restrict TX Function> -> <Address Book PIN>How to set a PIN
Enter up to a 7-digit number.
To cancel the entered PIN, clear the numbers and press [OK].