Starbucks gets increasingly digital, 10 percent of transactions made by phone

Counting out nickels and dimes at the cash register as you pay for your overpriced coffee is quickly becoming fodder for back-in-my-day stories. Ever since Starbucks debuted Square Wallet payments last November, the pay-by-phone approach has proved to be a popular strategy. According to a recent Wall Street Journal report, mobile purchases now account for 10 percent of the chain's transactions, a number higher than many would have expected. Considering that Starbucks announced yesterday that it would soon introduce wireless charging to a handful of locations in Silicon Valley, it looks like the company is determined to build its growing street tech cred.