Trump said he will raise tariffs on $250 billion in Chinese goods to 30%, and hike duties on another $300 billion in products to 15%.Politicsread more
Stocks dropped after Donald Trump ordered that U.S. manufacturers find alternatives to their operations in China.US Marketsread more
Federal Reserve Vice Chair Richard Clarida said Friday that the global economy has deteriorated in the past month.Marketsread more
The latest escalation in the trade war ups the odds the economy will fall into recession and that the Fed will aggressively cut rates.Market Insiderread more
Here are the products that stand to be the most affected by China's new tariffs on $75 billion worth of U.S. goods.Marketsread more
"We don't need China and, frankly, would be far better off without them," Trump tweeted.Politicsread more
"My only question is, who is our bigger enemy, Jay Powell or Chairman Xi?" Trump wrote amid a series of tweets that rattled markets Friday.Politicsread more
The final week of August could be highly volatile as markets fret over the economy and the latest developments in trade wars.Market Insiderread more
The death comes as federal and state health officials investigate a slew of lung illnesses in connection to e-cigarette use.Health and Scienceread more
Bank of England Governor Mark Carney says trade war has a confidence effect on business around the worldMarketsread more
Supreme Court Justice Ruth Bader Ginsburg has completed a three-week course of radiation therapy for cancer, the top court said in a statement Friday.Politicsread more
A McMuffin will soon be a few swipes away.
McDonald's is now testing a mobile payment application at its Salt Lake City and Austin, Texas, stores, the company told CNBC in an email. Restaurants frequently test out new ideas in select markets before deciding to expand an item or service nationwide.
"We're always looking at new technologies to make the McDonald's experience better for our customers," said McDonald's spokesperson Ofelia Casillas. "We are testing some of these technologies in a few markets, so it's premature to speculate on the decisions we may make after the tests, but we're excited to bring a cutting-edge experience in the future to our customers."
(Read more: Secret's out! Hidden menu items)
The fast-food giant already has a nationwide app that provides a restaurant locator, nutritional facts and career information.
The move comes as McDonald's is battling tepid sales with new items like the addition of steak to its breakfast menu and Mighty Wings. On Tuesday, the company said U.S. rose 0.2 percent. Analysts had expected same-restaurant sales in the region to rise 0.8 percent.
McDonald's is the latest company to enter the mobile payment fray, joining Chipotle and Starbucks. Meanwhile, competitor Burger King allows customers to place delivery orders by phone or online in many markets.
"McDonald's is just evolving at the same pace as consumers—especially the younger generation and millennials who really don't pay in cash," said Darren Tristano, an executive vice president at Technomic, a research and consulting firm. "They use credit."
(Read more: McDonald's shakes up its menu)
McDonald's new payment option will improve transaction speed and accuracy, Tristano said—two of the highest priorities in the fast-food business.
"I don't know if it's going to move the needle in its effort to boost sales," he added. "I think it's an operational move. If there's a benefit to sales, it is for customers who don't have cash or credit cards but still want to purchase at McDonald's."
—By CNBC's Katie Little. Follow her on Twitter