title: Firebase Analytics demographics
body: <p>The Firebase Analytics dashboard shows a card for demographics, including age and gender.</p>
  
  <p>According to <a href="https://support.google.com/firebase/answer/6317486?hl=en">https://support.google.com/firebase/answer/6317486?hl=en</a> Firebase should be automatically collecting age and gender. Can anyone explain how it collects that information, and if anything else needs to be done in order to provide it?</p>
  
  <p>In my dashboard, I'm seeing no age or gender data. I also haven't found any public API in the firebase-analytics SDK that would allow for setting the age or gender of the user.</p>
  
  <p>If it comes from the advertiser id, does that mean we must also integrate with AdMob in order to get that data -- and if we don't use AdMob, then age and gender are impossible to gather? And does AdMob then also have to be linked with the Firebase project before it can start populating that data?</p>