The University of Texas at San Antonio
Police Department | Crime Prevention Division
210.458.4242 | 210.877.0046 | 210.458.6199
Credit Card Security Precautions
The fraudulent use of credit cards is not limited to the loss or theft of actual credit cards. A capable criminal only
needs to know your credit card number to fraudulently make numerous charges, including cash withdrawals, against
your account. The following are a number of crime prevention tips or recommendations to guard against the illegal
use of credit cards.
• Photocopy both the front and back of all your credit cards and keep the copies in a safe and secure location.
This will enable you to cancel your credit card as soon as possible if it is lost or stolen.
• Endorse all credit cards as soon as they arrive.
It is advisable not to carry credit cards in your wallet or purse. Carry them separately if possible.
• Carry only the minimum number of credit cards actually needed and never leave them unattended.
• When you write a check, never allow the salesperson to write down your credit card number on the check.
If paying by credit card, never let the salesperson write down your driver’s license or social security
• Avoid signing a blank receipt, whenever possible. Draw a line through blank spaces above the total when
you sign card receipts.
• Unless you are absolutely confident you are dealing with a reputable company, never give your credit card
account number over the telephone. Don’t be fooled by a scam where a con artist wants to verify your
credit card number because you won a prize. One current scam involves con artists who call at random. The
thief informs the victim that if their VISA card begins with the number four, the victim wins a prize.
However, all VISA cards begin with the number four, and all MASTERCARDS begin with the number
five. The only prize the cardholder gets is the fraudulent use of their credit card.
• Notify credit card companies in advance of a change in address.