Abstract-The use of debit and credit cards has become
indispensable to consumers worldwide. This cashless method of
payment offers flexibility and convenience. It eliminates the
safety risk of carrying large cash amounts in person and cards
can be cancelled as soon as it is lost or stolen. One of the most
popular methods of non-cash transactions is through a Point of
Sale (POS) terminal. A POS is a quick and convenient method
for a customer to pay a business, but may lead to the disclosure of
sensitive information without the knowledge of the customer. By
investigating the information printed on the customer and
merchant transaction receipts at various POS devices in South
Africa, it is shown that information provided on the POS
transaction receipts can put the consumer at risk as the credit
card number, expiry date and name of the card holder may be
printed on these transaction receipts. This paper investigates
various POS devices used by South African businesses and the
relevant information printed on the merchant and customer
transaction receipts after a transaction. It is shown that the
information contained in the transaction receipts from certain
POS terminals is sufficient to perform successful online
purchases at multiple online shopping sites. We also show that
when the CVV number on the back of the credit card can be
obtained while the transaction is in progress, even more online
shopping sites can be successfully used without