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Panopticlick

panopticlick.eff.org Tools, games & demos Interactive tools & demos Security & privacy Class of 2019-10 Hall of Fame
Screenshot of panopticlick.eff.org captured 2026-07-20
Page preview · captured 2026-07-20

Resurfaced independently across 8 calendar years, with breakout response in 2 of them.

submissions
19
submitters
19
observed span
2010–2019
peak thread · 143 comments
248 pts
latest 20+ return · 2019-10-25
248 pts

Submission timeline

2007–2026

One slot for every year since HN launched. Height is that year's peak points; orange marks a 100+ point or 50+ comment breakout. Select a bar to open its strongest thread.

First comments on top threads

HN comment order

Interesting counterpoint to people who claim that turning off Javascript is just another data point. I use Firefox with a decent amount of tracking protection turned on. With Javascript, I leak about 16 bits of identifying information. Without, I leak about 7. You want to take that with a grain of salt, because I don't think Panopticlick is a perfect tool to measure this stuff. For one thing, I suspect that Panopticlick is highly influenced by the people who visit…

Impressive idea for fingerprinting a user, especially along the font/plugin vector. Looking at just Java plugins, and the number of releases, you could also in theory age a browser, on how long it's been operational on how far back in versions of a plugin the browser maintains.

mey·88-point thread·

The test over at http://ip-check.info, by JonDo, is more comprehensive at the expense of not using information theoretical measures like those of Panopticlick, which would give a realistic (if biased) view of browser fingerprint uniqueness. They’ve developed a Firefox setup profile called JonDoBrowser that’s optimized for their own test. While the HTTP headers JonDoBrowser sends to sites can be easily distinguished from those of other browsers (though they’ve attempted to standardize HTTP headers within their own…

r-w·77-point thread·

https://news.ycombinator.com/item?id=10753087

dang·38-point thread·

The first top-level comment from each of the four biggest threads, in HN’s own order. Excerpts are shortened; open a comment for full context.

Breakout years
2

100+ points or 50+ comments

Total points
823

reference only — not used in Hall rules or ranking

Total comments
377

reference only — not used in Hall rules or ranking

Every submission