FoE - Multiple accounts on one device

Hi everybody,
is it possible to play with multiple accounts on the same worlds on one device and hide it from InnoGames? So that it can't be detected?
I've heared that just by using a VPN the problem isn't solved because of other informations that are transmitted.
Would be nice if someone could share his or her experiences :)

VPN and Safe Mode will do just fine

I'm on Mac OSX. Is there a save mode?

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Have you made the experience yourself that it works without detection?
Or is your tip based on knowlage how they manage things?

I also have some accounts on a server and nothing has happened in years