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I was recently at Starbucks and noticed a woman holding her iPhone out to the cashier. My first reaction was “Umm, you need a credit card or cash.” Then I realized she’d offered a barcode on her phone to be scanned. I let out a “WOW. That’s so cool. How does that app work?”  She explained that it was an app linking your phone to a credit card account set up on Starbucks’ website. You choose how often you want to indulge your Starbucks addiction and set it to refill once you use up your desired amount. To the caffeine addicted, this is a dream come true: less things to carry and easy access to their beloved coffee.