A limited number of Tim Hortons stores are now letting you pay for a double-double with a smartphone.[np_storybar title=”Tims getting the donut smell back in the donut store” link=”https://business.financialpost.com/2013/12/06/tims-getting-the-donut-smell-back-in-the-donut-store/”%5DAs its core coffee business faces a renewed assault from McDonald’s and Starbucks, Tim Hortons’ CEO aims for an appetizing refresh. Keep reading. [/np_storybar]Participating outlets in Canada and the United States will allow users with some BlackBerry 10, Google Android and Apple iPhone smartphones to pay with a TimmyMe app.The BlackBerry app uses near field communication (NFC) technology and works similarly to the tap-to-pay method used with some debit and credit cards. Tim Hortons has not disclosed which stores are now offering BlackBerry payments.The app for Apple devices running iOS 6.0 or later and Android devices running version 4.0 or later use barcode scanning technology. So far, there are 11 municipalities in Ontario’s Niagara region that have stores setup for these payments.For all platforms, customers have to register a Tim Hortons card on the TimmyMe app to add funds to their mobile account, which can then be used to pay for purchases and replenished as needed.“We’re always looking to provide our Tim Hortons guests with the best overall customer experience, and mobile payment is one area that we feel can help streamline the average time spent at the order counter,” said David Clanachan, the company’s chief operating officer, in a release Thursday.Customers make a payment by opening the company’s app on their smartphone and tapping the screen to display a barcode, which is then scanned using a near-field communications terminal.Tim Hortons rival Starbucks already offers barcode-based mobile payments to customers via its own smartphone app.