4 ms·
I actually posted a demo of a modern spin on this here recently: https://news.ycombinator.com/item?id=30569396 https://news.ycombinator.com/item?id=30569396 :)
by varun_ch 4y ago
I actually posted a demo of a modern spin on this here recently: https://news.ycombinator.com/item?id=30569396 https://news.ycombinator.com/item?id=30569396 :)
Since browsers don't allow websites to detect the link colour, we can just trick the user into telling it for us.
https://varun.ch/history https://varun.ch/history
After posting that, I got some emails from others, and someone shared a cool technique involving detecting how long it takes to paint the link to the screen. https://ndev.tk/visted/ https://ndev.tk/visted/
- Am4TIfIsER0ppos 4y ago> invisible captcha Disabling javascript saves the day again?
- varun_ch 4y agoIt should also be possible to make a fake CAPTCHA without JavaScript - just a little more clunky: https://news.ycombinator.com/item?id=30576517 https://news.ycombinator.com/item?id=30576517
- colejohnson66 4y agoThis black square demo didn’t work on my iPhone (iOS 16.1). I obviously have HN in the tab’s history, but it didn’t detect it.
- watermelon0 4y agoWorks for me on 16.1.1 with both Safari and Chrome (not that there are that many differences anyways.) It detected HN and other sites.