Contactless cards appear to be having a moment in the U.S. Some second-generation chip cards (now contactless, too) are arriving in mailboxes, and contactless cards will soon speed the purchase of subway and bus tickets in New York City. “Capital One has been issuing contactless cards to new Quicksilver and VentureOne customers since mid-April,” says Daniel Mouadeb, vice president of U.S. cards at Capital One. The issuer’s new Savor dining rewards credit card, introduced in O