JPMorgan Chase & Co. on Thursday introduced <A HREF="http://www.eweek.com/article2/0,1759,1817716,00.asp?kc=ewnws051905dtx1k0000599">a credit card that does not have to be swiped</A> and allows consumers to wave their card past a sensor to make payments, a function already common at many U.S. gas stations. A top issuer of credit cards in the United States, JPMorgan Chase said its new credit card, called "blink," will be marketed this summer and can be used in movie theaters, convenience stores, specialty shops and drug stores.