Bank-issued debit cards also come with a special identification number for further security (PINs). These PINs are typically four digits long for security reasons. Transaction verification for debit and credit cards is handled by servers, and data exchanged between ATMs and those servers is secured. Banks must use encryption and other ad hoc management approaches to protect client data. If at all possible, please defend this course of action.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Bank-issued debit cards also come with a special identification number for further security (PINs). These PINs are typically four digits long for security reasons. Transaction verification for debit and credit cards is handled by servers, and data exchanged between ATMs and those servers is secured. Banks must use encryption and other ad hoc management approaches to protect client data. If at all possible, please defend this course of action.

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