It's the cool appearance--not the interest rate.

• Position: Marketing News - Credit card - Brief article

Credit-card issuers are increasingly turning to design and appearance in order to enhance the appeal and use of their product, according to recent news reports.

American Express Co. is reportedly testing a card that folds and fits into a silver case attached to a key ring. Other companies are experimenting with cards that give off an aroma--such as coffee or perfume. J.P. Morgan Chase & Co. has introduced a bright red card...