There's certainly been no shortage of mobile privacy controversies of late, with fierce debate over the level of access developers should have to your personal data such as contacts or photos. It's often difficult to know where the line between functionality and privacy should be drawn, and with that in mind the Electronic Frontier Foundation has written up a Mobile User Privacy Bill of Rights that seeks to codify the best practices for app developers. Partly modeled on the Consumer Privacy Bill of Rights for the web recently unveiled by the Obama administration, the EFF's document states that users have basic rights such as security, individual control, and transparency, and also advises on the best technical solutions to help protect them. The foundation notes that some of these issues will likely need other parties such as mobile carriers to get on board, but it looks like a good place to start for app developers concerned about giving their users the best experience.