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Since its formal launch, Isis has very aggressively marketed its mobile wallet. The venture of AT&T, Verizon Wireless and T-Mobile has offered numerous freebies and statement credits to anyone willing to try it out, and recent figures show that these efforts may be paying off.
Any Isis user can take the app to a Jamba Juice store or a Coca Cola vending machine to get a free drink by paying with Isis. According to Jamba Juice, Isis users have claimed more than 270,000 smoothies so far. With Isis use growing 50% each month at its stores, Jamba Juice expects to give away a million smoothies by the fall. (Image: Bloomberg News)