On February 27, 2013, the Article 29 Working Party adopted an opinion (Opinion 02/2013) to clarify the legal framework applicable to the processing of personal data in the development, distribution and use of smartphone apps. Its opinion focused on the following points: user consent requirement, principles of purpose limitation and data minimization, need to take adequate security measures, obligation to correctly inform users, their rights, reasonable retention periods, and in particular, the fair processing of data collected from and about children.

The Article 29 Working Party drew up a list of recommendations on these different topics for app developers, app stores, and OS and device manufacturers, as well as other parties involved in personal data processing for their own account, i.e., primarily advertisers and Web Analytics providers.