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2
votes
4answers
390 views

A second bank card arrived with the same PIN

I recently applied for a second credit card for my partner to use on my account and was surprised when her preset PIN number turned out to be the same as mine. Coming from a development background I ...
90
votes
8answers
19k views

Why do ATMs accept any PIN?

The other day I tried to withdraw some cash from an ATM in a hurry and punched in a wrong pin. I realized that only when I hit the "ok" button, but to my surprise the ATM did not complain. It showed ...