In addition to adding passwords, Robert Siciliano, an online security expert for McAfee, recommends other a few simple things users can do to keep the information on their devices safe, such as resisting the urge to click the “remember me” function on applications and websites and remembering to log out when leaving a site.
http://gcn.com/blogs/mobile/2013/03/mobile-security-password-a-start.aspx