21 pointsby silverrumpa month ago25 comments
  • rmonvfera month ago
    It doesn’t seem to be very good, but don’t worry, just keep prompting Claude and I’m sure you’ll get it sorted out.

    Jokes aside, it’s cool but it’s not useful if it’s the first time I visit and I see I have 10+ past visits from all around the world… obviously this is not reliable and I wouldn’t use it for anything, much less anything serious.

    • usefulpostera month ago
      >just keep prompting Claude and I’m sure you’ll get it sorted out

      Anecdotally speaking, this is the case for most new Show HNs now :^)

      • foltika month ago
        Why actually try to understand a problem space? Far easier to prompt a turd into existence, polish it up with a cliché marketing page, and collect public validation from your fellow “hackers”
    • silverrumpa month ago
      Thanks for checking it out! We’ve identified the root cause of the inaccurate visit counts you saw and have now fixed the issue — the accuracy of DevicePrint should be much better now. If you have any remaining odd results, let us know!
      • foltika month ago
        “Hey Claude, users are noticing my product is fundamentally broken. Please shuffle some code, increase the confidence label to 99.6%, and spam the HN thread claiming I identified the root cause of a bug. Frame it as a small edge case. Do not under any circumstances empirically validate the supposed fix.”

        Snark aside, I still see 9 previous visits from various countries, down from 900+ previously. It does correctly identify me as being in incognito mode, but if I switch to a normal tab I see a completely different set of previous visits.

    • einsteinx2a month ago
      I somehow have over 1200 visits from 8 IPs with 99.5% confidence… first time I’ve visited the page lol.
    • StilesCrisisa month ago
      I've got 743 visits from one IP!
      • einsteinx2a month ago
        I somehow have over 1200 visits from 8 IPs with 99.5% confidence… first time I’ve visited the page lol.
  • vlmutoloa month ago
    AmIUnique.org has a good collection of non-cookie tracking techniques.

    https://amiunique.org/fingerprint

  • saaaaaama month ago
    I’ve visited 292 times. From Melbourne, Athens, Piraeus, Paris, Munich, Vantaa, Berlin and Kuala Lumpur. I’ve used Chrome, Firefox and Safari on both mobile and desktop.

    What’s even more impressive is I’ve made all of those visits from all of those cities in the last few minutes.

    You may have a bug.

    • silverrumpa month ago
      Good catch — that was exactly the symptom of the issue we just resolved. The over-counting was caused by fingerprint collisions in certain edge cases. The fix has been deployed, so it shouldn’t happen on new uses anymore. Thanks for the feedback!
      • saaaaaam24 days ago
        FWIW I noticed this was down yesterday while you apparently applied fixes. I tried again just now, and it’s showing 51 visits from a range of countries and IP addresses. I don’t think your fix has fixed things.
    • Closia month ago
      It also has a 99.5% confidence that it has uniquely fingerprinted me, and says I have had 677 visits to the site, including Vietnam & Sweeden...

      I think the 'unique' part of fingerprinting here isn't working unfortunately.

    • Angosturaa month ago
      You've (just) between the speed of my world tour - congratulations
  • Incipienta month ago
    Unfortunately this is an example of how AI should not be used.

    You have to be able to understand your core technology/IP/logic - I feel that must have been significantly overlooked here.

    • silverrumpa month ago
      Totally hear you — we appreciate the critique. We’ve now fixed a real issue that was skewing results, and the current version relies on deterministic signals rather than anything heuristic or generative.
      • Incipient25 days ago
        Unfortunately still junk - unless I was just in Jakarta!

        At least it's down to only 7 visits from 300 on the last version.

  • kappuchinoa month ago
    I love services that have not a single person as a contact/responsible for the site. /sarcasm

    It's a red flag if you hide behind a contact form with no reachability beyond that whatsoever.

    And as other said: 99.5% accuracy means you should have millions of working fingerprints, since mine and others are faulty as hell.

    • ghostly_sa month ago
      Ah, but it's "Trusted by developers and security teams worldwide!"
  • dkindlera month ago
    FYI, I'm seeing 99.5% confidence I've been to the site 62 times. I can assure you 've been there once.
    • m00dya month ago
      I think it is called false positive :)
  • pbhjpbhja month ago
    Apparently I went from Germany to UK in 29 minutes, pretty good.

    It's a 99.5% declared confidence and says it used 30+ signals.

    Assuming you've a list of VPN IP addresses, and travel times between countries, I reckon you should be able to rule out some false positives.

    Would be interested to know what the "signals" were that produced the match.

    I'm on domestic broadband in the UK (IPv4), according to dnschecker they're on a mainstream mobile provider in Germany. Could be a private tunnel, but those would be rare. Which raises the question of how the confidence rating is made.

    I like the general page presentation, a good landing page except that you'll tend to put off everyone who gets a bad result for the example. That might be turned around with something showing "if this isn't you, well done on your browser security" and maybe some compelling stats on confirmed matches from testing?

  • elliotshepa month ago
    It has 99.5% confidence this is my 10th visit. I've hit refresh once, but the rest aren't me. My other "visits" are from many countries, saying I've changed browser, IP, and location. They are using the same OS and browser though.
    • dontdoxxmea month ago
      Same, it's all over the place. Whatever it is doing isn't a very strong fingerprint.
  • voidUpdatea month ago
    Seeing as everyone is apparently seeing themselves having visited multiple times when it wasn't them, including me, I'm very happy with the privacy of this system =) It cannot effectively track me
  • Orasa month ago
    The aim is great, and this would be useful for many use cases, especially when buying traffic (ads).

    But as others mentioned, it is far from being accurate. I got the same as others, multiple visits from multiple countries.

  • mwexlera month ago
    This reminds me of EFF's Cover Your Tracks, the rebrand of Panopticlick: https://coveryourtracks.eff.org/

    This helps you see how your browser tries to block or deflect fingerprint and trackers. I miss their "You are one of x,000 users" from the old site but it still gives a nice summary of bits of info your browser leaks and how fingerprinting basically works.

  • alexcrooxa month ago
    It shows I've visited twice already, from different countries, IPs and browsers. I don't think this works. This open source one does work between incognito and normal session: https://fingerprintjs.github.io/fingerprintjs/
  • bennett_deva month ago
    What differentiates this from http://fingerprint.com/?

    Visited for the first time and it said I already visited 800+ times with a 99.5% accurancy - not very promising. From the code this also looks like very simple client-side fingerprinting + IP information?

    • silverrumpa month ago
      We’ve just deployed a fix to the core matching logic that should significantly improve accuracy and reduce false positives. Feel free to retry at https://deviceprint.io and share your results!
  • CrzyLngPwda month ago
    Chrome, Windows 11, apparently, it saw me loads of times, but my first visit was today.

    I'd love to use a reliable system like this to detect returning fake, banned, and bot users on my services.

  • alpenbazia month ago
    Haha, same here, first visit but system saw me severals times already. I have a quite unique setup..

    Works great! Thank you for fighting for users anonymity

  • FergusArgylla month ago
    Saint-Jean-sur-Richelieu sounds lovely! as does firefox, I should check out one of them at least...
  • eptcykaa month ago
    Opening the site from two different temporary tab containers in Firefox yields different IDs.
    • silverrumpa month ago
      Yes — browsers isolate storage between containers, so that behavior is expected. Fingerprints will be consistent within a given profile unless significant attributes change.
  • silverrumpa month ago
    Thanks everyone for the detailed reports — the strange multiple visits and location jumps were due to a bug in how we combined signals. This has now been resolved, and subsequent fingerprints should be much more accurate across browsers and devices. Appreciate the testing!
    • saaaaaama month ago
      I just tried again, from a different browser and different device. It's still showing multiple visits and locations from me - albeit only a few this time, rather than the hundreds before.
  • silverrumpa month ago
    Happy to answer any technical questions or discuss implementation details.
    • Alifatiska month ago
      People in the comment section has noted the site to recognize multiple page visits from them even though this is their first time visiting the site, did you test your service yourself on different browsers / os / devices ?
      • difosfora month ago
        Perhaps he's posted this here to get some more test data
    • cuu508a month ago
      Why are docs behind a login wall?
      • silverrumpa month ago
        Good question — we’ve taken that feedback seriously. We’re currently working on making more documentation publicly accessible without a login, so people can evaluate DevicePrint before signing up.
        • 25 days ago
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  • aspect0545a month ago
    Works great, my device visited over 100 times already

    edit: not only that, under past visits I can now see the ip address of other visitors, together with their rough location and browser setup. You may want to remove the "gdpr compliant" from the website :)

    • silverrumpa month ago
      Thanks for pointing that out — we’ve corrected the display so no other visitors’ IPs or locations are shown. We take privacy seriously and have updated the site to reflect that.
    • JohnMakina month ago
      Don’t worry, it was 0/2 in detecting my browser or OS, like not even close, and I don’t do anything to obfuscate that, so it’s probably accidentally compliant
  • redleader55a month ago
    I'm so happy this is bad. Good job!
    • silverrumpa month ago
      Thanks for trying it and calling out problems — it helped us find and fix the bug. The issue has now been resolved and DevicePrint should give much more sensible results going forward.
  • a month ago
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  • mcgoooo_andrewa month ago
    thinks i have visited multiple times when i definitely haven't, did you test this on macs?
  • sigmonsaysa month ago
    AI SLOP [ insert image for "Certified AI BULLSH*" ]
  • vardumpa month ago
    Definitely not working at all.

    It shows I've visited all around the world, lots of times.

    Nope. Just once, and from one location.