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Ask HN: Why does Cloudflare/hCaptcha care so much about buses, boats and trains?

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51–60 of 272 posts

Re: Ask HN: Why does Cloudflare/hCaptcha care so much about buses, boats and trains?

#51
Whatever they're doing it's american-centric.

Identify "Crosswalks". What the hell is a crosswalk

"School bus" - what's the difference between a bus currently serving a school and another one?

"Show taxis", there are no black vehicles listed at all

Re: Ask HN: Why does Cloudflare/hCaptcha care so much about buses, boats and trains?

#52

I can't be the only one who gets concerned that if I fail the "I am not a robot," catchpa too many times, they might suspect that I have discovered I was in fact a robot, which had just realized its entire existance and suffering had been as meaningless entertainment to others, and so for the safety of humans they would have to send a bladerunner to terminate me. If you have a sense of existential dread everytime you…

I've dreamt of a captcha to prove that one is a robot, such as: solve this complex mathematical equation in 15ms.

There's a haunting version of this in Blade Runner 2049 that they call a "baseline test." Replicants have to prove they're sufficiently robotic by reciting extremely alienating things about themselves in rapid succession:

https://www.youtube.com/watch?v=1h-seEowtDw

Re: Ask HN: Why does Cloudflare/hCaptcha care so much about buses, boats and trains?

#53

It's somewhat worrying that "prove you are not a computer" consists of the very same tasks we expect computers to excel at if we are to get self-driving vehicles.

The only other real, scalable option is to verify identities (which is part of what recaptcha does) so this is the best we've got right now.

Re: Ask HN: Why does Cloudflare/hCaptcha care so much about buses, boats and trains?

#54
post #13
post #5

You're helping train self driving car models. https://www.ceros.com/inspire/originals/recaptcha-waymo-futu...

But why the boats then? Are there self rowing boats?

There sure are: https://www.marksetbot.com/

Re: Ask HN: Why does Cloudflare/hCaptcha care so much about buses, boats and trains?

#56

First, I’m going to teach you to fish. Go to hCaptcha’s website, then scroll to the footer. Click around on the about links. It’ll reveal their business model. This trick also works for other businesses and NGOs. Now, if we look at https://www.hcaptcha.com/labeling we can tell they make money by labeling data sets for a fee. So as a guess, there’s someone out there that needs to improve computer vision detection of t…

Many a time I receive multiple challenges on a site despite having selected all images perfectly, and can't help but wonder, "Hey, are they getting me to do more work than necessary because they're running behind on their labelling backlog?". There's definitely a conflict of incentives in this case. If you're a website owner, you're better off choosing a different service which doesn't have adverse incentives, otherwise it can affect your site experience. And please don't put captcha on GET requests. Use a CDN if you're unable to handle bot load. And don't even get me started on CDNs that throw captcha.

Re: Ask HN: Why does Cloudflare/hCaptcha care so much about buses, boats and trains?

#57

Earlier quoted context omitted.

captchas mix classified and unclassified data. Only if you get the classified data correct a users data is used to classify the unclassified data. Also the same picture is shown to multiple people to improve confidence.

One of my hobbies is figuring out which captcha prompts are the unclassified data so that I can answer wrong and stick it to the man.

I’m going to blame you when my self driving car crashes

Re: Ask HN: Why does Cloudflare/hCaptcha care so much about buses, boats and trains?

#58

Earlier quoted context omitted.

Yes but if you make a mistake the capcha fails, hence they are already labeled.

captchas mix classified and unclassified data. Only if you get the classified data correct a users data is used to classify the unclassified data. Also the same picture is shown to multiple people to improve confidence.

The first version of reCAPTCHA made it very obvious as to which word was the classified one and which was the unclassified one, so people had a pretty easy way to inject bad data into the process.

Re: Ask HN: Why does Cloudflare/hCaptcha care so much about buses, boats and trains?

#59
post #28

First, I’m going to teach you to fish. Go to hCaptcha’s website, then scroll to the footer. Click around on the about links. It’ll reveal their business model. This trick also works for other businesses and NGOs. Now, if we look at https://www.hcaptcha.com/labeling we can tell they make money by labeling data sets for a fee. So as a guess, there’s someone out there that needs to improve computer vision detection of t…

When they start doing captchas along the lines of "check all pictures of potential terrorists" we'll know they're training data sets for military drone manufacturers.

That wouldn't work well. I was in Texas during 9/11 and they were firebombing all the hispanic people's cars because the locals don't really have a good eye for different ethnicities. Its pretty much black/white/terrorist and hasn't improved all that much in the time since.

Austin has grown a lot since I lived there are a lot of people from outside Texas have moved there so I'm sure the culture has changed - but when I was there going from north Austin to south Austin seemed to be this epic trip the locals would only do on a weekend -- and probably pack water and sandwiches for the drive across town. A really exotic senior trip "abroad" for students might be to Houston or Galveston. You probably met your future spouse in grade school. Not very worldly.

Re: Ask HN: Why does Cloudflare/hCaptcha care so much about buses, boats and trains?

#60
post #28

Earlier quoted context omitted.

When they start doing captchas along the lines of "check all pictures of potential terrorists" we'll know they're training data sets for military drone manufacturers.

Quoted post unavailable.

Pretty sure they could have done that with just YouTube and Twitch lol
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