In February 2008 the generic free Wi-fi was opened to all Starbucks cardholders, with a ceiling of two hours per day. ... That QR code on the left will take your smartphone to my Twitter feed too.

A Starbucks flyer with a QR code on it Users can also find the mobile bar codes in magazines such as People, in newspapers and on outdoor ads in major U.S. cities.

Earlier this month, Starbucks began requiring customers to provide their first and last names, email addresses and ZIP codes in order to access the internet, a company spokeswoman confirmed to News4.

Free unlimited Wi-Fi is coming to nearly 7,000 company-operated Starbucks stores in the U.S. beginning July 1, Starbucks CEO Howard Schultz said today.