Here’s The Reason Why ATM PINs Have Only 4-Digit Code

You walk into your friendly bank ATM machine and swipe your card to withdraw money where you need to type a 4-digit PIN code to authenticate yourself and proceed to withdraw money. However, have you ever thought what is the reason behind 4 digit code?

Why ATM PINs always have a 4 digit code?
Well, we don’t have enough time to know everything.
However, the reason behind this is little funny. So, it will be worth knowing why ATM PINs always have 4 Digit Code. ATM (Automated Teller Machines) was first introduced in the year 1967 and it had been widespread in no-time.
Instead of visiting the bank and waiting in a long queue to withdraw money, you just need to swipe your ATM card, insert your secret 4 Digit PIN code and obtain the money you require.

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Let’s come to the point and know why ATM only have 4 Digit code instead of 6 or 8 digits.
ATM was invented by a well-known Britisher John Adrian Shepherd-Barron.
He was born in Shillong and was born to Dorothy Barron (Wimbledon Ladies Double Champion). While testing his invention John Adrian Shepherd-Barron proposed for a 6-digit PIN.
The first person to use his latest invention was his wife, Caroline. Caroline apparently rejected the idea of using a six-digit PIN for her husband’s invention and the reason behind it was surprising.
Caroline rejected the idea of putting the 6-digit code for her husband’s invention just because 6-digit was too long for her to recall.

So, this was the reason why ATM PIN has only 4 digits.
Sometimes we even forget our 4-digit code. Just imagine what can happen if the PIN was of 8 digits like we use it on our social media accounts.
So, let’s thank that woman.