Starbucks generates 3 million mobile transactions a week in the US

"Starbucks is seeing big results via mobile, with the beverage giant generating more than three million United States mobile payment transactions per week.
In addition, Starbucks is rolling out a cross-channel, multi-brand loyalty brand, as well as global social impact initiatives. The comments were made by Howard Schultz, president/CEO of Starbucks, during the company’s annual meeting of shareholders."

Source:  Mobile Commerce Daily, 22nd March 2013

Note - this is 3m payments, not $3m in payments!