Show HN: Cerno – CAPTCHA that targets LLM reasoning, not human biology

11 pointsposted 2 hours ago
by plawlost

21 Comments

iwalton3

2 hours ago

Unfortunately it didn't work for me with my trackball mouse. I tried multiple times. This is very likely also problematic for accessibility without another verification pathway, as assistive devices and screen readers would fail the heuristics too.

modinfo

29 minutes ago

It doesn't work for me either, I was trying multiple times and always fails, I was started to think, that maybe I'm the robot.

dcliu

2 hours ago

Interesting idea but it didn't accept me the first 3-4 times I tried to draw the path on laptop trackpad - going slow led to it failing before I was finished, going fast led to messy paths that were rejected as well. Could something like this work for users with different levels of dexterity?

kccqzy

2 hours ago

I am on a mobile device and I consistently find that my finger is not precise enough to draw a path; it kept complaining about path “not quite right” where my path just touched the wall a little bit. And when my finger literally obscures the screen while drawing, it essentially means I have to memorize an entire path before beginning.

This requires significant spatial thinking skills and short-term memory for a human and it is absolutely unfair for a human to expend that much cognitive power to access a website.

opem

2 hours ago

this game is a rage bait! Try solving on a mobile device. I don't think an elderly person would ever be able to get through this!

ge96

2 hours ago

Even when I successfully draw a path from green to red, not touching anything it says "Sorry that's not quite right"

king_phil

2 hours ago

Was impossible for me to solve, too, on mobile.

bestouff

2 hours ago

Same. I think an AI would have an easier time than me.

ahofmann

2 hours ago

I managed once to complete the maze, but then it went into "checking" and a spinner forever.

simlevesque

an hour ago

I did it correctly with a mouse and was rejected. Then I drew a straight line and was rejected. Then I closed the tab.

happytoexplain

2 hours ago

Everybody is saying it's impossible on mobile/trackpads, but I couldn't do it with a mouse either :(

CoUHKT57BSe

2 hours ago

I'm assuming this is an april fools joke... cause it just don't work at all as a CAPTCHA.

ranger_danger

an hour ago

The description doesn't make sense either... like "Color-word interference at maze decision points", but there are no colors (or words) at the decision points.

_diyar

an hour ago

I‘m as confused as the other commenters, especially since it‘s unusable on an iPad.

DHolzer

an hour ago

like the idea, but i cant see what i'm doing when my finger coveres the screen

ravenical

2 hours ago

Is the idea that if you /pass/, you're an AI?

1attice

an hour ago

Did not work for me (kept getting "something's not right") but I applaud the concept.

I worry a bit about accessibility but that is a problem all CAPTCHAs have

ceayo

an hour ago

am i a robot or is this just way too hard?

Surac

an hour ago

Does not work on a touchscreen. Can’t see maze under finger and smh it always kicks me in the middle of the drawing

user

an hour ago

[deleted]