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. See “Security,” p. 74. 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.
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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.