Prove you're human by winning a claw machine

(feralui.vercel.app)

76 points | by speckx 4 days ago ago

55 comments

  • csydas 21 hours ago ago

    Cute but like a lot of captchas misguided at this stage

    The problem they try to solve is real, but I don't think that 'hacking minigames' are the correct direction to be looking to solve this, and ultimately end up making mandatory human identity verification seem more palatable as the less annoying option

    games and challenges like this are more annoying / resource consuming to humans (i.e., time, patience), and can imagine it ends up excluding humans who cannot complete the challenge due to extenuating circumstances, like i have no idea if someone who uses sight assistance accessibility tooling can complete this challenge reasonably, and if this style of challenge takes off I am pretty sure the challenges will continue to exclude many humans who use accessibility tools

    I worry this approach ends up being the next cookie banners (which were always malicious compliance in the saltiest, pettiest way)

    anubis-style cycle burning approaches seem to be best, but have not looked for research on the efficacy of this approach. if it does have a positive impact for operators though, a method like that seems better

    edit: to be clear, I do not want mandatory identity verification -- not at all it's awful, and my fear is that tools like this will only serve to make that option seem more palatable in comparison

    • jhartikainen 20 hours ago ago

      I think this purely as an idea is pretty fun, and there is value in that. But beyond the initial impressions it's exactly as you say. It's not different at all from others in how it will get annoying over time.

      Accessibility is a big concern with all kinds of CAPTCHAs it seems. Even without any disabilities, I've seen some that I cannot solve because it's illegible.

    • IAmBroom 10 hours ago ago

      Your lack of punctuation and capitallization impedes your communication.

      Also, what is "anubis-style"? Google failed me (which is becoming more common).

  • pinkmuffinere a day ago ago

    Is there reason to believe this is a good discriminator of human vs AI? I didn't see any about page, or statistic, or anything like that, but maybe I'm just missing it?

    edit: The page links to [1], but [1] has none of the information I'm really looking for -- why should somebody use this tool?

    [1] https://github.com/mortspace/playcaptcha

    • Shank a day ago ago

      Of course not. It is clearly a fun toy.

    • stavros 21 hours ago ago

      Congratulations! You have proven you are human by complaining about the test instead of solving it. Redirecting you now...

  • BLKNSLVR a day ago ago

    It's nothing like a claw machine. It picked up the toys twice in two tries.

    A human would be incredibly suspicious of this.

    • hurtigioll a day ago ago

      the real CAPTCHA would be having a "this is not realistic" button that only humans would press

    • numpad0 21 hours ago ago

      Yeah, real claw machines straight up have tunable win probability controls(subject to local gambling laws).

      but this is fun!

    • marssaxman a day ago ago

      My exact thought: this is nothing like a real claw machine.

  • brtkwr a day ago ago

    Claude Opus 4.8 one-shotted it... I think we should gear these systems towards making the cost of abuse expensive as they will be able to get around these things more and more easily.

    • arbol 21 hours ago ago

      It's just a concept, not a real test.

      Captcha are already expensive at scale due to escalating checks when abuse is detected. You have to orchestrate and pay for residential proxies, containers with different fingerprints, different behavioural data, clean IP rep, emulate device performance to avoid revealing youre running on a server... A 1-shot doesn't scale against this.

      • rossvc 21 hours ago ago

        If the payoff is worth it, no captcha is too expensive.

        • IAmBroom 10 hours ago ago

          OP said "already expensive"; you said "too expensive". Both can be true.

    • CapsAdmin 20 hours ago ago

      unless it has video input, i wonder if something based on animation and timing would work, as screenshots wouldn't clearly capture motion and response time would be too slow as well

    • ikari_pl a day ago ago

      So, a paywall is the simple solution

  • groestl 21 hours ago ago

    I can prove I'm human by losing a claw machine.

  • bschwindHN a day ago ago

    The thing to grab is always on the front layer. Seems like an AI could be pretty easily trained to defeat this.

    Also when you move the claw left and right, it "leans" in the wrong direction.

    • eks391 a day ago ago

      Yup. I could guess what needs to be grabbed without reading the prompt because it was always the front-most object. It also has the largest grab area; some of the plushies can't even be grabbed.

      Fun idea though

    • m00dy a day ago ago

      I can bypass this captcha just by using gemma4

    • ozim 21 hours ago ago

      You don’t need to train it just ask current state of model.

    • latexr 21 hours ago ago

      Not only on the front layer, but mostly in the centre too. I just tested it a bunch of times and the overwhelming majority it worked without even moving the claw, it was just grab and release.

  • SweetSoftPillow 21 hours ago ago

    The most important part that most commenters did not read:

    "And to be clear: it checks that someone is playing, not who they are. Keep your real checks behind it."

    It's just a game, not a CAPTCHA.

    • rendaw 21 hours ago ago

      Both the submission title and the first sentence are: Prove you’re human by winning a claw machine.

      • lemagedurage 19 hours ago ago

        They should make it more clear that it's a concept.

        I could see a real version that sends the inputs to the backend where some analysis is done, but right now an adversary can just run the onVerify callback as "bypass".

  • mcyc a day ago ago

    Lichess has a checkmate captcha that I think is cute.

    It requires you to solve a mate-in-one puzzle to, e.g., post on the forums.

    (Sorry, don't have a better link, there wasn't any non-technical I could find about it).

    https://www.reddit.com/r/chess/comments/q19wgq/til_lichess_d...

    • tjoff a day ago ago

      Because computers turned out to be so bad at chess? :)

      • jaggederest a day ago ago

        Reverse captcha: only robots can reprove one of the Euler problems on the fly? Statistically speaking we can round the people who can into the outlier group, right?

        • sshine 19 hours ago ago

          That's actually interesting:

          Like when games detect aimbots, they don't ban people, but put them in an aimbot bracket, so everyone you play with is a cheater.

          Provide a captcha that is essentially harder for a human to solve, but trivial for either a human or an AI, and transparently separate them into two communities.

  • PeterStuer 21 hours ago ago

    Just stop this insanity already. The amount of "anti-bot" challenges actual humans fail to pass is getting ridiculous. For small commercial entities, you could say them shooting themselves in the foot is probably them getting what they deserve as a result of them not reigning in vigilante sysadmins, but when it is also happening on actual official government sites, this is where the line has been crossed.

  • jdw64 21 hours ago ago

    Thanks to this game, I was able to change my identity from a slightly less fallen human into a machine. Thank you

  • mohsen1 a day ago ago

    Codex with Browser Use (Codex 5.3 Spark) was able to solve this with a simple prompt

    https://github.com/user-attachments/assets/0b80b07b-d88f-414...

  • maxbond 21 hours ago ago

    I don't know what a next generation CAPTCHA should look like, but I know anything game-shaped will be a trivial target for RLVR. That's like trying to beat Stockfish. That ship has sailed.

  • teekert 19 hours ago ago

    I am a human and have never won anything at a claw machine.

    • pjc50 19 hours ago ago

      They're rigged.

  • spaqin a day ago ago

    I'm tired of constantly having to prove I'm a human. Especially if it's trying to be lighthearted and fun on the surface, it just reminds me how Internet has fallen.

    • vasco a day ago ago

      I prove I'm a human by giving up trying to use the website. A machine would just relentlessly keep trying. You should try it.

    • nomel a day ago ago

      > it just reminds me how Internet has fallen.

      phpboard added captchas back in 2004.

  • HardwareLust 13 hours ago ago

    Really fun idea and well done, but this would get annoying very quickly.

  • undefined a day ago ago
    [deleted]
  • clark1013 21 hours ago ago

    Much better than Google’s 'find objects in pictures'!

  • TZubiri a day ago ago

    >npm install playcaptcha

    Imagine you get pwned for trying this out in your home project and the APT escalates to your company repos and infects your company assets, and then the post mortem comes in and you have to explain this is what infected the company it stack

    • Terr_ a day ago ago

      > npm install

      Coworkers on project: "Containers? Not running things as root? Hah, you're overengineering things: Just follow the readme where it says to install the daemons and run all code and plugins on your dev-box. It works fine, then we can show how we're using AI!"

      (Yeah, not as good as completely separate computer, diminishing returns, but still...)

    • thunderbong 21 hours ago ago

      If you see the code, that dependency just happens to be another file in the repository [0]

      The only dependency is the 'motion' library.

      [0]: https://github.com/mortspace/playcaptcha

      • TZubiri 19 hours ago ago

        does npm install pull code from that github repo, though? If not, auditing that repo is a huge blunder.

        I'm seeing this from npm, which is a bit different:

        https://www.npmjs.com/package/playcaptcha

        Not saying the package is malicious, (although it might be, but it's a more likely threat that the devs themselves become infected by a supply chain worm and spread it downstream.) just saying, if you are going to audit it, actually audit it as if you were up against an attacker.

    • GuestFAUniverse a day ago ago

      npm install randomgotcha

  • codelong888 21 hours ago ago

    lol this is actually fun. in this era of ai, knowing who's real human and who's ai is so underrated

  • Simulacra 17 hours ago ago

    Cute but… Will there ever be a day when we don't have to prove that we're human?

  • psychoslave 21 hours ago ago

    No human needs to prove they are, online or elsewhere. Online, be it human or bot, the issue is not the ontological class of the direct actor, it's the goal of the people who launch the browsing. When the intention is malevolent, the situation is not better just because the campaign would involve real humans working in inhuman conditions.

  • sevenzero a day ago ago

    I really like this! Also the other things you can find on the website. Cool stuff! Makes me want to get better at Frontend shenanigans.

  • Mistletoe a day ago ago

    I wish all captchas were like this. A lot more fun!

  • nicman23 21 hours ago ago

    i d rather play 1-1

  • shevy-java a day ago ago

    What makes me human?

    If it is DNA then why would I need a claw machine? (Note that this defnition on DNA, which in itself is mega-odd since DNA differs, would mean that via synthetic biology one could yield humans - according to such a definition. But this does not have to be correct, so the definition would be flawed.)

    If it is not DNA, how else to prove it?

    • latexr 21 hours ago ago

      A CAPTCHA is not concerned with your biology or philosophy, only with if you’re an automated request.

  • doctor_radium a day ago ago

    Time and time again, I prove that I'm human by giving this crap the finger and then visiting some other site. It's calling out a false positive and then exercising good taste.