Ever wondered Why ATM has Only 4 pins?? We Have The Answer

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ATM stands for Automated Teller Machines, and these have now become a major part of our living. One can withdraw a large amount of cash in a small time and all this credit goes to Scottish inventor John Adrian Shepherd-Barron.

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Source: theguardian

John is the son of Wimbledon ladies doubles champion Dorothy Barron. Known for his creativity, his ATM invention made a drastic change in our lives. Now the interesting thing is that John never proposed 4 digit PIN! Yes, his idea was to give 6 digit PIN to ATM’s. Even while testing the ATM’s he proposed 6 digit PIN. But then how did it change?

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Source: uandblog

The simple 4 digit access makes withdrawing money so much easier, right? Well, then for this you need to thank John Adrian’s wife, Caroline! Caroline was the first person to use his invention and proved to be the best example of “Behind every successful man there is a woman”!

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Source: urbannewsdigest

Barron was in army and so he could remember his 6 digit army number, but in order to check for other people he decided to check Caroline! Caroline rejected his 6 digit PIN idea because she could remember the numbers up to only 4!

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Source: consumerist

John Barron, in an interview, said, “Over the kitchen table, she could only remember four figures, so because of her, four digits became the world standard.” Since 6 numbers stringed together was too much for Caroline!

But then don’t you think 4 are way better 6 digits PIN? We could have had tough times with the ATMs, Isn’t it?

Title image: null-byte.wonderhowto

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