Discover Financial Services is making it easier for its credit-card customers to use Google Inc.'s new pay-by-phone service by adding a feature to its online account website that will let customers click a button to have their credit cards automatically loaded into the Google Wallet software application.

Discover Financial Services (DFS) is making it easier for its credit-card customers to use Google Inc.'s (GOOG) new pay-by-phone service.

The Riverwoods, Ill., lender said Thursday it is adding a feature to its online account website that will let customers click a button to have their credit cards automatically loaded into the Google Wallet software application.

The app, which turns certain Android smartphones into payment devices, allows users to make purchases at participating retailers by tapping their phones against special payment terminals instead of swiping a plastic card.

"Our cardholders regularly use their Discover card to make purchases and payments online, in store and now more frequently through their mobile devices," Sanjay Gosalia, director of mobile for Discover, said in a statement.

Discover is the sixth-largest credit-card issuer based on spending and operates a payments network that competes against Visa Inc. (V), MasterCard Inc. (MA) and American Express Co. (AXP) to process transactions.