In order to use this feature , you first have a wallet in iPayYou otherwise It's not going to work. The next year already sound very promising and I can't wait to see more .
Ipayyou is not a popular service but with starbucks they might get into mainstream,I think this is a new service and they might incorporate many service in the future,who knows Mcdonald might be added soon or many popular fastfood and cuisine.
Yeah, this is surely a big effort by one of the largest chained network to accept bitcoin into their service which mutually supports the growth of Starbucks as well the supporting firm. This might eventually get the attention of similar such service providers similar to Starbucks.