At this point you could easily go your entire life without knowing what PIN stands for. It has become colloquial. It doesn't matter any more what is stands fo

At this point you could easily go your entire life without knowing what PIN stands for. It has become colloquial. It doesn't matter any more what is stands for. Just like Laser, radar, Tardis, or ATM. The original acronym doesn't matter. That's ok, beause Acronyms Seriously Suck. They are new words, with a mildly interesting derivation.