PIN codes
The personal identification number (PIN) code and the universal personal
identification number (UPIN) code (4 to 8 digits) help to protect your SIM card
against unauthorized use. The PIN code is usually supplied with the SIM card.
The PIN2 code (4 to 8 digits) may be supplied with the SIM card and is required for
some functions.
The module PIN is required to access the information in the security module. The
module PIN is supplied with the SIM card if the SIM card has a security module in
it.
The signing PIN is required for the digital signature. The signing PIN is supplied
with the SIM card if the SIM card has a security module in it.