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Extension 2: Blocking and unblocking PIN cards

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@jeffreybakker jeffreybakker released this 03 Aug 18:45
· 52 commits to master since this release

The assignment for this extension is as follows: A PIN card should be blocked after three consecutive attempts to use it with an incorrect PIN code. After a card is blocked it cannot be used anymore to access (the money no) a bank account.

A PIN card can be unblocked by the user by logging in and calling the unblockCard method.