I am trying to find a way to store data for things like:
xp, rank points, currentSkin, currentHat, etc..
So that when a players logs in and gets list of friends he will be able to see their level, rank apoints, and aesthetic stuff like skin and hat.
So I though summaryFriendData is a great place to keep these stats because it is automatically added in many responses, BUT... clients can just alter their own summaryFriendData and set "xp" to 999,999, "rank points" to 999,999 and "currentSkin" to "superRareSkin" (and cheat).
So my question is, where do I store this kind of public data while still (a) getting it for each friend in listFriends request. (b) not letting the client alter it and the opportunity to cheat.