What are some of the coolest facts about automated teller machines (ATMs) that most people don't know?
What are some of the coolest facts about automated teller machines (ATMs) that most people don't know?. Do You Mr or Mrs has this kind of concern?, If yes then please found the good answer below this line:
Shashidhar Nagabandi
I think I've read this somewhere on Quora or on Facebook, I don't exactly remember. But it's a really cool fact.
One of the security flaws of an ATM is that after you withdraw your cash and leave, the thief might use a heat detector to sense which keys you've pressed. Your fingers will heat the keys and they can be easily identified. He might even guess the order based on the heatness of the things i.e, the hottest is the last pressed one. So your pin is not so secure.
As you can see, even the order of the PIN number is easily identifiable.
So the ATM companies have come up with a brilliant plan. They made the keypad with metal. So as soon as you press the key, the heat is transferred to the entire plate. (As metal absorbs heat more easily) So your pin is safe!
How much thought goes into designing something! 🙂
Images source: http://m.phys.org/news/2011-09-a…
Thank you Peter Mortensen for the edit.
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