When signing, draw a line through the blank space above the total, and keep copies of the receipts to compare with charges on your monthly billing statements. Review credit-card accounts promptly every month and immediately report any questionable charges by writing to the company that issued the card. Never lend credit cards, or leave them or receipts lying around. Never write credit-card numbers on a postcard. If a credit card is lost, call the card company immediately.
Most companies have toll-free numbers to report missing or stolen cards.
Under federal law, consumers are not liable for any unauthorized charges after they call each company. With a few keystrokes and a click of the mouse, you can shop at home - right from your computer. Unsecured information sent over the Internet can be intercepted. Shop with companies you know and always determine the company's return and refund policies before you place an order. Never give out your Internet password.