Why is a PIN required for an ATM?
It is required for authentication purposes. The system does not
have any means of finding out if the person using the ATM card is
the actual customer. So, the banks issue a PIN number to the
customer and ask him/her to keep it safely and not share with
anyone else. This lets the bank assume that anyone who knows the
correct PIN number for an ATM card is a valid customer and lets
them use the ATM machine. So, it is our responsibility to keep our
PIN numbers safe.
Related Q&A：
What are the advantages to the customer using the ATM？Oh, there are quite a few advantages for customers using the ATM! For starters, it's super convenient. You don't have to wait in long lines at the bank during business hours. Anytime, day or night, you can access your money. It saves a lot of time, you know? Also, it's more private. You can do your transactions without having to interact with a bunch of people. And it's fast! You can get your cash or check your balance in a jiffy. So, using an ATM is really a great option for customers.
