> ## Documentation Index
> Fetch the complete documentation index at: https://research.verifyyou.com/llms.txt
> Use this file to discover all available pages before exploring further.

# The one-pager

> The whole mechanism on one page. Read it in a minute, print it, or forward it.

<div className="max-w-5xl mx-auto px-6 vy-op">
  <div className="vy-op-head">
    <div>
      <p className="vy-kicker">HumanCheck · for research on Alchemer</p>

      <h1 className="mt-3 text-gray-900 dark:text-zinc-50">Every response from a real, unique human</h1>

      <p className="mt-3 text-lg text-gray-500 dark:text-zinc-400">HumanCheck locks bots and repeat humans out before they ever reach your study. About five seconds per respondent, no code.</p>
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    <a className="vy-btn vy-btn-primary vy-op-dl" href="/images/humancheck-one-pager-research.png" download="humancheck-one-pager.png"><Icon icon="arrow-down-to-line" iconType="light" size={15} />Download the one-pager</a>
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  <div className="vy-op-wrap">
    <div className="vy-op-sheet">
      <div className="vy-op-flow bg-gray-50 dark:bg-zinc-900 border border-gray-200 dark:border-zinc-800">
        <div className="vy-op-lanes">
          <span className="vy-fork-pill vy-op-node"><span className="vy-op-nico"><Icon icon="link" iconType="light" size={14} /></span>They click your study link</span>

          <svg className="vy-op-arrow" viewBox="0 0 60 14" fill="none" preserveAspectRatio="none" xmlns="http://www.w3.org/2000/svg" aria-hidden="true">
            <path d="M2 7 h50" stroke="currentColor" strokeWidth="1.5" />

            <path d="M46 2 L54 7 L46 12" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" />
          </svg>

          <span className="vy-fork-pill vy-op-node"><span className="vy-op-nico"><Icon icon="camera" iconType="light" size={14} /></span>Five-second face check</span>

          <svg className="vy-op-arrow" viewBox="0 0 60 14" fill="none" preserveAspectRatio="none" xmlns="http://www.w3.org/2000/svg" aria-hidden="true">
            <path d="M2 7 h50" stroke="currentColor" strokeWidth="1.5" />

            <path d="M46 2 L54 7 L46 12" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" />
          </svg>

          <span className="vy-op-split">
            <span className="vy-fork-pill vy-fork-pass"><span className="vy-fork-ic"><Icon icon="circle-check" iconType="light" size={15} /></span>Pass: into your study</span>
            <span className="vy-fork-pill vy-fork-fail"><span className="vy-fork-ic"><Icon icon="circle-xmark" iconType="light" size={15} /></span>Fail: nothing to pay</span>
          </span>
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        <p className="vy-op-cap text-gray-500 dark:text-zinc-400">The check proves the respondent is live, present, and unique. Their one-time passcode fills itself in at your study's gate; with auto-submit on, they never even see the login page.</p>
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      <div className="vy-op-grid">
        <div className="vy-op-pillar bg-gray-50 dark:bg-zinc-900 border border-gray-200 dark:border-zinc-800">
          <p className="vy-op-ptitle text-gray-900 dark:text-zinc-50"><span className="vy-num">1</span> A passcode per human</p>
          <p className="vy-op-ptext text-gray-500 dark:text-zinc-400">Each verified respondent receives a one-time passcode, created for their face alone and dropped onto their link.</p>

          <div className="vy-viz vy-op-viz">
            <div className="vy-viz-field"><span className="vy-viz-code">vyp\_k2•••••••4qt</span><span className="vy-viz-check"><Icon icon="circle-check" iconType="light" size={16} /></span></div>
          </div>
        </div>

        <div className="vy-op-pillar bg-gray-50 dark:bg-zinc-900 border border-gray-200 dark:border-zinc-800">
          <p className="vy-op-ptitle text-gray-900 dark:text-zinc-50"><span className="vy-num">2</span> Fakes locked out</p>
          <p className="vy-op-ptext text-gray-500 dark:text-zinc-400">A duplicate face never earns a second passcode, and a spent passcode is dead forever.</p>

          <div className="vy-viz vy-op-viz">
            <div className="vy-viz-lane">
              <span className="vy-viz-ico">
                <Icon icon="user" iconType="light" size={15} />
              </span>

              <svg className="vy-viz-arrow" viewBox="0 0 64 16" fill="none" xmlns="http://www.w3.org/2000/svg" aria-hidden="true">
                <path d="M2 8 h52" stroke="currentColor" strokeWidth="1.5" />

                <path d="M48 3 L56 8 L48 13" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" />
              </svg>

              <span className="vy-viz-out vy-viz-pass"><span className="vy-viz-outico"><Icon icon="check" iconType="light" size={13} /></span>Into the study</span>
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            <div className="vy-viz-lane">
              <span className="vy-viz-ico">
                <Icon icon="robot" iconType="light" size={15} />
              </span>

              <svg className="vy-viz-arrow" viewBox="0 0 64 16" fill="none" xmlns="http://www.w3.org/2000/svg" aria-hidden="true">
                <path d="M2 8 h38" stroke="currentColor" strokeWidth="1.5" />

                <path d="M46 2 v12" stroke="currentColor" strokeWidth="2" strokeLinecap="round" />
              </svg>

              <span className="vy-viz-out vy-viz-fail"><span className="vy-viz-outico"><Icon icon="xmark" iconType="light" size={13} /></span>Blocked</span>
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            <div className="vy-viz-lane">
              <span className="vy-viz-ico">
                <Icon icon="user-group" iconType="light" size={15} />
              </span>

              <svg className="vy-viz-arrow" viewBox="0 0 64 16" fill="none" xmlns="http://www.w3.org/2000/svg" aria-hidden="true">
                <path d="M2 8 h38" stroke="currentColor" strokeWidth="1.5" />

                <path d="M46 2 v12" stroke="currentColor" strokeWidth="2" strokeLinecap="round" />
              </svg>

              <span className="vy-viz-out vy-viz-fail"><span className="vy-viz-outico"><Icon icon="xmark" iconType="light" size={13} /></span>Same face, second try</span>
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        <div className="vy-op-pillar bg-gray-50 dark:bg-zinc-900 border border-gray-200 dark:border-zinc-800">
          <p className="vy-op-ptitle text-gray-900 dark:text-zinc-50"><span className="vy-num">3</span> Pay only for real</p>
          <p className="vy-op-ptext text-gray-500 dark:text-zinc-400">Blocked traffic never enters your data and never gets paid.</p>

          <div className="vy-viz vy-op-viz">
            <div className="vy-viz-row"><span className="vy-viz-id">rsp\_78421</span><span className="vy-viz-tag">Verified</span><span className="vy-viz-pill vy-viz-hi">92%</span></div>
            <div className="vy-viz-row"><span className="vy-viz-id">rsp\_78422</span><span className="vy-viz-tag">Blocked</span><span className="vy-viz-pill vy-viz-no"><Icon icon="xmark" iconType="light" size={11} /></span></div>
            <div className="vy-viz-row"><span className="vy-viz-id">rsp\_78424</span><span className="vy-viz-tag">Verified</span><span className="vy-viz-pill vy-viz-mid">61%</span></div>
          </div>
        </div>
      </div>

      <div className="vy-strip">
        <div className="vy-strip-head">
          <span className="vy-strip-title">Set it up in Alchemer</span>
          <span className="vy-strip-meta">Five steps · once per study · no code</span>
        </div>

        <div className="vy-strip-steps">
          <div className="vy-strip-step"><span className="vy-strip-num">1</span><b>Create your study</b><span>Build as usual; leave page 1 empty. That is where the gate goes.</span></div>
          <div className="vy-strip-step"><span className="vy-strip-num">2</span><b>Create a verification</b><span>In the VerifyYou dashboard, pick Alchemer and paste your Alchemer link.</span></div>
          <div className="vy-strip-step"><span className="vy-strip-num">3</span><b>Add your passwords</b><span>Login/Password action on page 1, one-time passwords, one per line.</span></div>
          <div className="vy-strip-step"><span className="vy-strip-num">4</span><b>Set it to fill itself in</b><span>Pre-populate with the merge code; auto-submit makes the gate invisible.</span></div>
          <div className="vy-strip-step"><span className="vy-strip-num">5</span><b>Share your study link</b><span>Everyone who reaches your study came through the check.</span></div>
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      <div className="vy-op-foot">
        <p className="text-sm text-gray-500 dark:text-zinc-400 vy-op-privacy"><strong className="text-gray-900 dark:text-zinc-50">No photo is ever shared</strong> with you or with Alchemer, only a yes or no. Your study receives a verdict and a passcode, never a face, a name, or contact details. Alchemer today; the same mechanism fits any platform.</p>

        <div className="vy-op-actions">
          <a className="vy-btn vy-btn-secondary text-gray-900 dark:text-zinc-50" href="/how-it-works">Read the full walkthrough<Icon icon="arrow-right" iconType="light" size={14} /></a>
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