Background: I am creating a Leaderboard of Facebook friends in unity.
Question: Can we download and save the images of Facebook Friends on the device of the user for the purpose of reuse? I would like to store the images of the FBFriends on the user's device so that there is no need to download the same pictures everytime the game is restarted. Is it legal to do so?
I asked the same question in Facebook Developers forums but I did not get any response. Kindly guide me. How do devs build a leaderboard of Facebook friends normally?