Steemit Logout from another device

Today I forgot where I put my phone.
I was very scared because these few days I log into my steemit account from mobile telephone .
In order to prevent things that I do not want to happen then I change my account password steemit from my computer.
https://steemit.com/change_password
logoutcdeb2.png

Is my account secure after i change my password?

What happend if another people found my phone and he can login to my account, because Steemit account is still log in on my mobile device?

or its automatically log out from another device when i change my password?

@dan and @ned

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