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>Not sure how they are doing this Did you happen to read the answers? Two specifically mention that Facebook requests authentication access (OpenID, I believe)
by ceol 15y ago
>Not sure how they are doing this
Did you happen to read the answers? Two specifically mention that Facebook requests authentication access (OpenID, I believe) the first time. It appears this user authorized Facebook at some point in the past and forgot about it.
When I look at this page: https://accounts.google.com/b/0/IssuedAuthSubTokens https://accounts.google.com/b/0/IssuedAuthSubTokens I can see that at some point in the past, I allowed Facebook access to my Google Contacts (probably their "find friends" feature). Facebook could use that to check if you're logged in.
- deleted 15y ago[deleted]
- kamkha 15y agoDid you happen to read the comments on the answers? > Nope it's not that unfortunately. I tried it myself removing all linked accounts. The event above still happens.
- ceol 15y agoI was talking about this one: http://webapps.stackexchange.com/questions/20018/facebook-detects-if-you-are-logged-in-gmail/20429#20429 http://webapps.stackexchange.com/questions/20018/facebook-de... "The OAuth tokens for Google are at https://accounts.google.com/b/0/IssuedAuthSubTokens https://accounts.google.com/b/0/IssuedAuthSubTokens (it's different from Linked Accounts). When I tried it, Facebook created a popup with a OAuth prompt the first time and only briefly opened a blank popup on subsequent attempts. De-authorizing facebook makes the prompts appear again." Unless they're talking about two different prompts?
- haakon 15y agoSorry, but that was a confusing way to quote. :-)