102 lines
2.9 KiB
Org Mode
102 lines
2.9 KiB
Org Mode
:PROPERTIES:
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:ID: b6402aa6-3315-4317-82a5-367af38f0ead
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:END:
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#+TITLE: High IQ captcha
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#+Author: Yann Esposito
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#+Date: [2022-02-21]
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- tags :: [[id:a5be1daf-1010-428f-a30f-8faf95c1a42f][blog]]
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- source :: https://news.ycombinator.com/item?id=30414374
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I just recently read into HN a new notion.
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High IQ Captcha. Captcha designated to prevent low IQ people to access
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some resources, but are easy to get from higher level IQ.
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We could extend this notion to use community filtering captchas.
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And I think this looks like a great idea.
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It will not make it impossible to retrieve some resources, but the price
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to pay will be different depending on your community.
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For some, it will be almost impossible to reach.
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Maybe it could be the great system to prevent eternal September in social
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networks.
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Another interesting idea will be to hide a few gems into my articles behind
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such kind of system.
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Like having a small encrypted text which would only be revealed if the
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reader want to put the extra effort in finding the result.
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Let's try to find a few different exercises for the reader.
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** Visible only via the HTML source:
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#+begin_src html
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<div style="display:none>
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The hidden text is here.
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I expect it not to be difficult to find.
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</div>
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#+end_src
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And perhaps we could generate a specific `css` with only the good answer:
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#+begin_src html
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<html>
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<head>
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<style>
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#hidden {
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display: none;
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border: solid 3px;
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text-align: center;
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font-size: large;
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padding: 2em;
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}
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p + .r1t:checked + .r1f
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+ p + .r2t:checked + .r2f
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+ p + .r3t:checked + .r3f
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+ div#hidden
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, p + .r1t + .r1f:checked
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+ p + .r2t + .r2f:checked
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+ p + .r3t + .r3f:checked
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+ div#hidden
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{
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display: block;
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}
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</style>
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</head>
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<body>
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<form>
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<p> What is ... your name? </p>
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<input type="radio" name="response1" class="r1t">Galaad</inpu>
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<input type="radio" name="response1" class="r1f">Arthur</input>
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<p> What is ... your quest? </p>
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<input type="radio" name="response2" class="r2t">to seek the holy grail!</inpu>
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<input type="radio" name="response2" class="r2f">to seek the holy grail!</input>
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<p> What is ... your favorite color? </p>
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<input type="radio" name="response3" class="r3t">red</inpu>
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<input type="radio" name="response3" class="r3f">blue</input>
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<div id="hidden">
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This is the CSS hidden message and it works.
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</div>
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</form>
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</body>
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</html>
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#+end_src
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Then ask users to use the inspector to retrieve the data.
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Then potentially, hide the data into some comment, or extra meta difficult
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to retrieve and ask them to look at the HTML source.
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** Encrypted
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A better idea is to use random long bits of data, with XOR.
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And answering all good answers will provide the correct XOR key.
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Can we make that with a static website without js?
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Hmm.... I don't think so ;)
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Secret being: ~MAIN_URL/secret~ with secret being the letters/numbers of the answers.
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I think we could do that with a ~form~ with some sort of backend dynamic program.
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Anyway it was a fun though experiement.
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