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General discussionCan bots pass captcha?(43 posts)(43 posts)
(43 posts)
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This is my favourite topic
Posted April 09, 2016
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rtcvb32: In theory yes. However computers aren't very good at object identification unless it's 1:1.

Back in the 80-90's there was a technology called OCR which builds a library of characters from fonts, and then does it's best to match everything. Unfortunately you'd get 80% good and static or glitches in areas would get things wrong. Mind you it was probably good enough for people who are blind since redundancy in language is high enough you can usually figure out what's wrong.

Anyways, a lot of Captcha today is warping the text or adding static or doing things that makes it harder if not impossible to do identification. Unfortunately a large portion of the time the images are so warped i can't figure it out either, making the natural organ we have in our heads for visually figuring things out pointless if things are swirled and warped and inverted and strikes through it and you can't tell if the random letters are an i, l, 1, or any other number of odd combinations that you effectively just blitz through to find a good easy captcha because they are crap.
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mk47at: Have you noticed, that a large number of Captchas consist of two separate parts? One that is clearly generated to cause problems and the other one looks like a bad scan or some (slightly) blurry image. Google does this (or at least used to do this). The use the first part to check if the answers are valid and the second part to get humans to do their ocr work for them. You could answer some garbage for the second part and it would still pass. I assume it works the same way the image categorization Captchas. They get free learning data.

It's a clever idea. You provide a service that benefits other people and in turn you get a large number of free workers.
What do you think providing a lengthy post on a forum does? :)
Posted April 09, 2016
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JDelekto: What do you think providing a lengthy post on a forum does? :)
So you do get money for writing posts? That sounds great ;)
Posted April 09, 2016
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JDelekto: What do you think providing a lengthy post on a forum does? :)
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mk47at: So you do get money for writing posts? That sounds great ;)
Yeah, only if you provide them with your vital statistics so they can extract the taxes from the $0.02 or more you make. Don't forget, in the US, Uncle Sugar takes an average 30% bite, so that equates to 0.006 taken out , rounded UP, it's only $0.01 actually earned.... and just when you think you put in your two cents worth, you only get half credit.
Post edited April 09, 2016 by JDelekto
Posted April 09, 2016
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mk47at: Have you noticed, that a large number of Captchas consist of two separate parts? One that is clearly generated to cause problems and the other one looks like a bad scan or some (slightly) blurry image. Google does this (or at least used to do this). The use the first part to check if the answers are valid and the second part to get humans to do their ocr work for them. You could answer some garbage for the second part and it would still pass. I assume it works the same way the image categorization Captchas. They get free learning data.
Heh, if they are still doing it i'll start putting crap in, like titties and stuff :P
Posted April 09, 2016
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mk47at: Have you noticed, that a large number of Captchas consist of two separate parts? One that is clearly generated to cause problems and the other one looks like a bad scan or some (slightly) blurry image. Google does this (or at least used to do this). The use the first part to check if the answers are valid and the second part to get humans to do their ocr work for them. You could answer some garbage for the second part and it would still pass. I assume it works the same way the image categorization Captchas. They get free learning data.
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rtcvb32: Heh, if they are still doing it i'll start putting crap in, like titties and stuff :P
I think they're investing in the hopes people will do just that!
Posted April 09, 2016
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SeduceMePlz: I've taken a 30-something-point rep hit (not sure exactly how much, but I'd recently passed the 600 mark).

I suppose it's also possible that bots aren't being used, and that there really are that many people with no lives scouring the forum for my posts and downrating them... in which case I don't know whether to be insulted or flattered. ;)
Ive lost about 60 points myself since tinyEGate,

As for me I'm flattered. :D
Post edited April 09, 2016 by ScotchMonkey
Posted April 09, 2016
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SeduceMePlz: I've taken a 30-something-point rep hit (not sure exactly how much, but I'd recently passed the 600 mark).

I suppose it's also possible that bots aren't being used, and that there really are that many people with no lives scouring the forum for my posts and downrating them... in which case I don't know whether to be insulted or flattered. ;)
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ScotchMonkey: Ive lost about 60 points myself since tinyEGate,

As for me I'm flattered.
As in proud of recognition or getting an apartment in London?
Posted April 09, 2016
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ScotchMonkey: Ive lost about 60 points myself since tinyEGate,

As for me I'm flattered.
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JDelekto: As in proud of recognition or getting an apartment in London?
Ermmm how about a shack in the Ozark mountains? Or winning the special Olympics?

I'm not picky :p
Posted April 09, 2016
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JDelekto: As in proud of recognition or getting an apartment in London?
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ScotchMonkey: Ermmm how about a shack in the Ozark mountains? Or winning the special Olympics?

I'm not picky :p
Well, it's all about the cost. I'm sure it would cost less to have a place in the mountains than it would securing a place in the special Olympics.
Posted April 10, 2016
Actually bots can get around captcha as long as they're loaded with software that allows them to understand what is being displayed and what to type in (there was a piece about this on the BBC about how easy it is to crack captcha).
Posted April 10, 2016
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JDelekto: I think they're investing in the hopes people will do just that!
Nah, with a system that can be abused in such a way, if 95% of the people don't know it, then most likely they will actually do it to the best of their knowledge, meaning they just send the text to 5 people and people who all say the same thing will end up with a proper answer.

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demonix00: Actually bots can get around captcha as long as they're loaded with software that allows them to understand what is being displayed and what to type in (there was a piece about this on the BBC about how easy it is to crack captcha).
I almost foresee the only way to go is a server calling you and confirming who you are by you actually entering a pin number that was texted or sent to you via voice phone call...
Post edited April 10, 2016 by rtcvb32
Posted April 10, 2016
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JDelekto: I think they're investing in the hopes people will do just that!
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rtcvb32: Nah, with a system that can be abused in such a way, if 95% of the people don't know it, then most likely they will actually do it to the best of their knowledge, meaning they just send the text to 5 people and people who all say the same thing will end up with a proper answer.
Thank goodness for snopes.com.
Posted April 10, 2016
I just had an amusing thought: Would it be possible to make a bot that detects if anyone on the forum has lost 5 or more rep in a single day and automatically upvotes enough of their posts to negate the abuse? A neutral robo-peacekeeper, a sort of Robocop for the GOG forum? That'd be hilarious! :P
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Community
General discussionCan bots pass captcha?(43 posts)(43 posts)
(43 posts)