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Undocumented Facebook API to identify friends in photos

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Re: Undocumented Facebook API to identify friends in photos

#21
post #19

Earlier quoted context omitted.

Yeah, OK, now think about the version Facebook (and thus law enforcement, intelligence agencies and advertisers) has access to.

Why would FB share any of this with advertisers?

For money.

Re: Undocumented Facebook API to identify friends in photos

#23

Earlier quoted context omitted.

I'd really like to read your paper. Everywhere I've found it referenced has a paywall. Is the full text freely available anywhere?

There's a little-known way to solve that problem for any paper: post the link to /r/scholar, and you'll get the full pdf within a couple hours.

I wouldn't call it 'little-known', it's become quite "famous" in my academic circles at least.

Just make sure you look up the DOI on libgen.

Re: Undocumented Facebook API to identify friends in photos

#24
post #20

Earlier quoted context omitted.

Have you quantified the number of people per account that FB is giving a suggested label to a detected face vs a users number of friends? It'd be interesting to see how FBs classifier performs.

Hm. I haven't quantified that, no. I think FB will only suggest labels that it's already very confident of.

I'd assume the they would be thresholds but the statistics would be interesting.

Re: Undocumented Facebook API to identify friends in photos

#25

Earlier quoted context omitted.

It's not that bad. > I found this API has a limitation it only suggests people in the photo who are in your FB friend list

Yeah, OK, now think about the version Facebook (and thus law enforcement, intelligence agencies and advertisers) has access to.

I can't imagine it would be that good? I suspect limiting the search space to your friend list (and probably the part of your friend list that you're ever actually likely to meet) is the only way to keep these results even a little accurate.

Re: Undocumented Facebook API to identify friends in photos

#26
I've never liked Facebook's "do you want to tag your friend" feature. It's a loaded question, like... have you stopped beating your wife? However you answer it, you've given Facebook feedback about their facial recognition.

If I hit yes, I'm tagging friends who might not want to be tagged. Furthermore, I might end up in the same boat with friends tagging pictures of me! Either way, I help better Facebook's facial recognition, which unnerves me.

On the surface, clicking "no" means that they got the facial recognition wrong. But what am else am I revealing? If the match was 98%, would they infer that one of us (or both) is concerned about privacy? That we have something to hide?

The third alternative is to click nothing. The only information that gives Facebook is that I'm not interested in helping curate their data any more than I already am.

Re: Undocumented Facebook API to identify friends in photos

#27

I've never liked Facebook's "do you want to tag your friend" feature. It's a loaded question, like... have you stopped beating your wife? However you answer it, you've given Facebook feedback about their facial recognition. If I hit yes, I'm tagging friends who might not want to be tagged. Furthermore, I might end up in the same boat with friends tagging pictures of me! Either way, I help better Facebook's facial rec…

That's a good point and it also brings to mind a way to fight it.

This http://arxiv.org/pdf/1412.1897v4.pdf could be one way. You could generate images which are not of someone who wants to protect his privacy, but tweak them to strongly correlate to an image of that person by the neural net, whereas it could be a picture of anything you have just optimized (the images could be just noise, or another person, etc). You could generate batches of those and upload them, and confirm to Facebook that they are indeed photos of the person who wants their privacy back. You could repeat this (automatically) and corrupt the weights in FB's neural net, which would overcome their face detection abilities for the individual in question.

Re: Undocumented Facebook API to identify friends in photos

#28
post #18

This is great! I tended to favor this technique for testing during my time in QA automation. People gravitate towards Selenium too quickly, when you really only need Selenium to test rendering.

Yes I think Selenium adds that additional headache of dependencies that need to setup. Also its a pain if you want it to run on headless server. With this too you need some setup but its minimum.

Re: Undocumented Facebook API to identify friends in photos

#29

I've never liked Facebook's "do you want to tag your friend" feature. It's a loaded question, like... have you stopped beating your wife? However you answer it, you've given Facebook feedback about their facial recognition. If I hit yes, I'm tagging friends who might not want to be tagged. Furthermore, I might end up in the same boat with friends tagging pictures of me! Either way, I help better Facebook's facial rec…

So, why do you still use Facebook again? FOMO > privacy?

Re: Undocumented Facebook API to identify friends in photos

#30

Earlier quoted context omitted.

It's not that bad. > I found this API has a limitation it only suggests people in the photo who are in your FB friend list

Yeah, OK, now think about the version Facebook (and thus law enforcement, intelligence agencies and advertisers) has access to.

Why would that version be any better than the one that is generally available?

The only difference that I imagine exists is being able to search from the pool of "everyone" rather than "your friends", but that would make it less confident. In the law enforcement version, there would probably be a way to anchor the search to another individual just to improve accuracy to an acceptable level.

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