php - Logging out facebook user without access token -

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i have created application users authenticate facebook post photos on timelines. application run on single system user come authenticate , post photos.

my problem logout each user when done. logging out using $loginurl = $helper->getloginurl(callback_uri, $permissions); logout use when new user go authentication.

why not logging out user done?

because using share dialog popup closes automatically user done sharing.

i looking way logout user without use of access token. because if user uninstall or change password access_token becomes invalid , when logging them out redirects facebook.com/home.php

i looking way logout user without use of access token.

that not possible.

if was, include call logout url website (for example src of image), , thereby log out person visiting site facebook, without agreement or knowing.

having application on single system multitude of users login facebook not idea – trigger facebook’s security systems thinking shady going on. , leads added hassle users (having confirm identity via additional steps/questions after login), potentially blockage of app facebook.

if @ possible, go way of letting users use own devices, f.e. providing free wi-fi @ event(?) location.


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