How to log out from all other devices using my icloud?

I tried "find my iphone " app. But it wasn't that perfect. But i want everyone using my icloud to get off it! How? Any tips?

I'm pretty sure that the only thing that you can do is change your password on iCloud. Then when they try to use your iCloud again, even if they are logged in. It will log them out and they'll have to know the password to get back in.

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