Apple Card, a Mastercard-branded credit card to be issued by Goldman Sachs, will be available in the U.S. this summer. Applications will originate exclusively from the Apple Wallet app in iPhones. Approved credit lines will be immediately provisioned to the Wallet app in the phone to cover NFC-based Apple Pay transactions. An accompanying payment card made of titanium is optional. It will be the first in the world to be issued without any printed card number, expiration date, three-digit security code, signature panel, or toll-free numbers for customer service. The back of the card will con...