Mobile devices, such as smart phones and tablets, are often shared among several users, especially if they are used in a family setting or owned by a school for general usage. The trend is to have some form of data segregation and a corresponding “log-in” process to confirm user identification to allow access to the correct data. In an environment where some of the users are young, it is hard to train them to use a log-in name and password. Also, a device may just be “lying around” when a young user happens to “find it” and could be allowed to access other people's data. The level of achievable security is usually a tradeoff between the convenience and complexity of data protection process. In many instances it is good to allow a young user, or any other user, to log onto a device but to only have access to what is appropriate to that particular user. Systems and methods providing for different people, including children, to access a device at a level that is appropriate for the user are needed.