Plastic solution
Question: Checkout operators the world over vigorously rub any malfunctioning
credit and debit cards on the nearest available article of clothing. Does this
actually serve any useful purpose?
Answer: From my experience, a credit or debit card will fail to “swipe”
correctly for one of three reasons.
First, something has permanently interfered with the magnetic strip on the
card, so that the computer cannot read it. The cashier will have to type in the
number manually, and a new card will probably need to be issued. Secondly, the
machine is faulty and is unable to read the card.…



