PUK change
PUK is intended to unblock card's PIN.
It's recommended to change PUK from time to time (for security reasons):
- The window for PUK change is displayed.
- The user inserts current PUK value, and new PUK value twice (for verification).
- New PUK value is saved when OK button is pressed.
It is not supposed to insert current PUK value when card's PUK has not been set;
the user inserts just new PUK value twice (for verification).
Blocked PUK can neither be changed nor blocked!
PUK change option is accessible if the card is selected in the information tree.
Ref. also PIN unblock and PIN change.