Why ATM Pins are four digits??

in #aninhasalegre • 6 years ago

Operational since 1967, Automated Teller Machines (ATM) have been around for almost 50 years now and it is safe to say that they are one of the most convenient inventions ever!/storage/emulated/0/amigo/ScreenLock/Favorite/http___glance.l.inmobicdn.net_public_dynamic_720x1280_97ccb3c39e7458cc545a55bcdb7d4910c2fbc6a4.webp.png

6 years ago in #aninhasalegre by
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     6 years ago 

    but why is 4 digit ?

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