Live data from Hacker News

Who am I: A mind reader (don't forget to view source)

tinsnail.neocities.org

71–80 of 181 posts

Re: Who am I: A mind reader (don't forget to view source)

#71
post #17

Obvious question - how was the list of URLs compiled? Some are really specific like YouTube channels. On the other hand there are only 15 categories and there are probably a lot of people that would not get a single match or only something very generic like Wikipedia.

fivethirtyeight.com appears about a dozen times for me?

Links appear multiple times if they are relevant to multiple interests. Clicks are only counted once.

Re: Who am I: A mind reader (don't forget to view source)

#74

Question: I know that the `:visited` exploit is handled by the browsers so that you can't figure out by javascript what is going on... but what if you used just CSS to figure it out? For instance, what if you generated the CSS which had a unique image it requested via the `background-image` property, stored the data on the server, then just requested the data from the server after the fact? Do the browsers prohibit t…

Yes, they prohibit anything that might be used for this purpose.[0] So the CSS allowed for :visited selectors is limited to a small subset. [0]: https://hacks.mozilla.org/2010/03/privacy-related-changes-co...

Great. Thanks for the link.

Re: Who am I: A mind reader (don't forget to view source)

#77

I thought the a:visited exploit was addressed.

I spent an unfortunate chunk of time trying to auto-click all the red square via jquery in chrome console. After a lot of reading and experimenting, I can verify that the exploit is thoroughly addressed (so far), and I cannot achieve my goal because of it :(. The most promising workaround would be to find a JS screenshot tool that doesn't rely on the DOM, and then run some client-side image analysis to get the index…

I don't think there actually is a way to take screenshots, w/o relying on the dom.

Re: Who am I: A mind reader (don't forget to view source)

#79
post #54
post #42

Earlier quoted context omitted.

For a less "covert" example than I am sure the OP was thinking, you could have "click the red button to continue" sort of like this page does. :)

Wouldn't that also require a hundred same sized differently colored buttons, just like this site?

You could prompt the user through multiple pages of "questioning" under a similar premise of psychological analysis, or some other manipulation. This would reduce the number of buttons per page.

That's what I think he meant.

Re: Who am I: A mind reader (don't forget to view source)

#80

Question: I know that the `:visited` exploit is handled by the browsers so that you can't figure out by javascript what is going on... but what if you used just CSS to figure it out? For instance, what if you generated the CSS which had a unique image it requested via the `background-image` property, stored the data on the server, then just requested the data from the server after the fact? Do the browsers prohibit t…

Could your draw the screen, then save that as a screenshot, and analyse the image?
Post reply on HN