Now, according to Washington, D.C.-area radio station WTOP, "The most-used mobile payment app in the United States stored its users personal information in a way that could have gotten a tech-savvy thief a lot of free coffee -- on you."

That would be Starbucks coffee.

Indeed, as the station reported, the coffee giant's executives have confirmed that the store chain's mobile application has been storing user names as well as email addresses and passwords, and all in crystal-clear text, not encrypted text.

The tech pub Computerworld adds: