Burger King (BKC) announced Wednesday that it’s piloting a smartphone app that lets its customers pay for food using QR codes displayed on the screens of their smartphones.

The fast food chain is testing its BK Mobile Crown Card program at about 50 restaurants around Salt Lake City. Burger King is working with payments technology company Firethorn Mobile.

“This unique solution works on any Android or iOs phone and does not require new hardware,” said Rocco Fabiano, Firethorn’s president, in a press release.

The announcement comes on the heels of news that Apple is adding its own digital card case for loyalty card and ticket apps that use barcodes. That app, Passbook, will be included in its updated mobile platform for the iPhone and iPad iOS 6.