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vices. Instead of using a signature to verify payments, customers
are asked to
enter a four-digit
personal identification number
(PIN), the same number used at cashpoints; this system makes
transactions more secure. With online banking, clients can easily
pay bills and transfer money from the comfort of their homes.
Airline pilots use computers to help them control the plane.
For example, monitors display data about fuel consumption and
weather conditions. In airport control towers, computers are used
to manage radar systems and regulate air traffic. On the ground,
airlines are connected to travel agencies by computer. Travel
agents use computers to find out about the availability of flights,
prices, times, stopovers and many other details.
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