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I was banned from the hCaptcha accessibility account for not being blind (2023)

(michaels.world)
405 points blindgeek | 4 comments | 18 Nov 24 10:13 UTC | HN request time: 0.001s | source
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Rastonbury ◴[18 Nov 24 14:46 UTC] No.42172733[source]▶
Some captchas are getting pretty discriminatory, not everyone lives in the West and can identify the objects they are asking you to. Another recent one sticks out where they asked me to pick a shape as the same number of conoids on screen. If you ask people on a street what a conoids I bet a significant amount will give you blank looks

Also at least now I know some people call those markings crosswalks

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jillyboel ◴[18 Nov 24 15:45 UTC] No.42173453[source]▶
I live in "the West" but English isn't my main language. I have no idea what a conoid is.
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1. rovr138 ◴[18 Nov 24 16:05 UTC] No.42173691[source]▶
> A conoid is a ruled surface whose rulings are parallel to a plane (called the directrix plane) and intersect a fixed line (called the axis of the conoid) (Gellert et al. 1989, p. 202). Examples include the circular conoid, helicoid, hyperbolic paraboloid, parabolic conoid, Plücker conoid, right circular conoid, Wallis's conical edge, Whitney umbrella, and Zindler conoid. If the axis is perpendicular to the directrix plane, the conoid is called a right conoid (Gray et al. 2006, p. 436).

https://mathworld.wolfram.com/Conoid.html

so, a surface with stripes - example https://pxhere.com/en/photo/1366651

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2. happymellon ◴[19 Nov 24 06:18 UTC] No.42180509[source]▶
This doesn't look like a surface with stripes at all.

> https://en.m.wikipedia.org/wiki/Whitney_umbrella

3. cmrx64 ◴[19 Nov 24 12:36 UTC] No.42182755[source]▶
Where did you get stripes from in any of that? A surface is ruled when it can be constructed by extruding a line (or segment) along some path… like waving a ruler around.
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4. radicality ◴[20 Nov 24 06:10 UTC] No.42191211[source]▶
I think they meant that something striped and rectangular, like a crosswalk, is a 'ruled surface' because the stripes themselves are like the ruler ?

So I guess a crosswalk (flat rectangle in 3D space), would be considered a 'ruled surface', but I don't think it meets the other requirement to make it a conoid.