A new app called 'CityGuide' offers free restaurant recommendations. To sign up, it requests access to: your precise GPS location at all times, your contacts list, your camera and microphone, and all photos on your phone. It also says in the fine print: 'We may share your data with marketing partners and affiliated companies.' A friend is about to sign up. As a privacy detective, what's wrong with this picture and what should your friend consider before agreeing?