Fries from your phone: McDonald's testing mobile payment app

McDonald's customers in Paris can now pay for a Royale with Cheese using their smartphones or tablets - a concept that could spread to the company's 33,500 locations worldwide if the fast-food leader likes the results.

Customers at 30 locations in France are now able to order their meals using the McDonald's mobile app, pay for it via PayPal, then join a separate line to pick up their food, according to a Reuters report.