Mobile payments now account for 21% of all transactions in US Starbucks-owned stores. “Although we only completed the rollout of Mobile Order & Pay across our system — 7,500 US company-owned store portfolio — in September, we were already operating at a run rate of over five million transactions per month,” CEO Howard Schultz said during the coffee chain’s fourth quarter earnings call. “That figure, believe it or not, is growing by the hour.”

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