You can use Facebook to identify people by their email or phone number

Re:You can use Facebook to identify people by their email or... by majormajor on Thursday January 16, 2014 @01:56AM (#7068409)

The contacts app on the iPhone does something like that last jump, where having a phone number + first name is enough for it to sometimes find the full FB profile and update the pic associated with the contact on the phone. I assume/hope it only works when they have their phone number public on their profile, though.

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Re:You can use Facebook to identify people by their email or... by vidyesh on Thursday January 16, 2014 @02:22AM (#7068462)

I guess for that to work you need to sync your Facebook Account and will only update/find full FB profile if they are in your friend list.

It doesn't do a common FB database wide search just from your contacts/FB friends.

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Re:You can use Facebook to identify people by their email or... by gtufano on Thursday January 16, 2014 @02:46AM (#7068504)

Well, no. I have some fb profile (with photo) in my phone contacts of people that it's not in my friend list, but (probably) it's in my "friends of friends" list. So probably the latter is enough.

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