title: Preventing iOS/Android users from faking their GPS location
body: <p>I am building both an Android and IOS app that will use a user's GPS location. I am concerned about a user faking a their GPS location as I've heard people doing with <a href="https://www.youtube.com/watch?v=CZOsJX2ZTuk" rel="nofollow noreferrer">Uber</a>. </p>
  
  <p>Is there a programmatic way of preventing or detecting this? </p>