Question

What is the function of a personal identification number (PIN) when entered into a bank automated teller machine (ATM)? 

   What is the function of a personal identification number (PIN) when entered into a bank automated teller machine (ATM)?
Understanding Data Communications: From Fundamentals to Networking
Understanding Data Communications: From Fundamentals to Networking
Gilbert Held 3rd Edition
Chapter 1, Problem 5 ↓

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A Personal Identification Number (PIN) is a numeric password that is typically 4-6 digits long and is known only to the cardholder.  Show more…

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What is the function of a personal identification number (PIN) when entered into a bank automated teller machine (ATM)?
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