Firebase Anonymous user

Question

I am programming an app that users will log-in to firebase anonymously,each login generate UUID , but I knew that UUID will change when the user clear the app cache or reinstall the app. how can I apply roles to each logged in user anonymously(PS: Users will never Login with user:password or Facebook just anonymously).

Since the security will be as follow:

   "root.child('users').child(auth.uid).child('paid').val() === true",
   ".write": 
   "root.child('users').child(auth.uid).child('paid').val() === true"

can I use other then auth.uid that i can link it to the anonymous user?

Thank you

Answer 1

我找到了一个解决方案，当我第一次从服务器中注册用户时，我给他提供一个唯一ID，每次用户从电话中登录时，它都会从我已经注册的唯一ID中过滤节点，然后检查CurrentUser.getUId不等于已注册的密钥，因此我可以删除旧节点并用新节点更新它。