Board Thread:Game Discussion/@comment-31439505-20170313144957/@comment-28333578-20170313151112

Signing out and then using a new log-in more or less won't work. It will almost certainly flag you for a ban. Signing in on separate accounts like that is basically what this "Army of Monkey's" team is doing on the speed event right now where it's the same guy running 20 accounts. Obviously you aren't trying to cheat like that, but it's the same concept. You could possibly get an emulator and let him play using your computer, if you have one that is. Other than that, the only safe way to switch from one account to another on the same device is, in my opinion, to delete the app and reinstall each time. Some might know better than me, however.