this post was submitted on 27 Mar 2026
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One of my favorite tricks that a friend of mine showed me years ago was this:
Put a check box or radio button somewhere on the page that will never end up visible to the end user marked with a label like "check here to verify you're not a not" or "choose your ethnicity from this list or select prefer not to say", then reject accounts that ever check those boxes, because a human never would. If you occasionally snare a blind person by mistake,they can email to bypass that with a human admin.
I don't know if it would trick modern bots, but he said it worked awesome back then.
It's largely considered ineffective these days. Detecting elements that don't affect layout is trivial, or elements that are occluded, transparent....etc
Capchas are one of the best options. But even then, LLM users bypass those relatively easily, and LLM users are one of the biggest risk areas for astroturfing.