parth1504 · July 23, 2026 18:49
diff --git a/privacy.html b/privacy.html
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  <title>PostureGuard — Privacy Policy</title>
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      max-width: 720px;
      margin: 0 auto;
      padding: 48px 24px 96px;
    }
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      padding-bottom: 16px;
      margin-bottom: 32px;
    }
    h1 {
      margin: 0 0 4px 0;
      font-size: 28px;
      letter-spacing: -0.3px;
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    .updated {
      color: var(--muted);
      font-size: 14px;
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      margin: 32px 0 10px 0;
      font-size: 18px;
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  </style>
 </head>
 <body>
  <main>
    <header>
      <h1>PostureGuard Privacy Policy</h1>
      <div class="updated">Last updated: 2026-07-23</div>
    </header>

    <div class="callout">
      <strong>Short version:</strong> your webcam video and pose data never
      leave your browser. The only thing that ever gets sent anywhere is a
      short text alert to a public ntfy.sh topic that you choose. No
      accounts, no analytics, no tracking.
    </div>

    <h2>What PostureGuard does</h2>
    <p>
      PostureGuard is a Chrome extension that uses your webcam to detect
      when you're slouching and sends a text alert to a
      <a href="https://ntfy.sh" rel="noopener">ntfy.sh</a> topic you
      configure. The alert can be received by a phone, a Garmin watch,
      or any other ntfy client to buzz you into fixing your posture.
    </p>

    <h2>What we collect from you</h2>
    <p><strong>Nothing.</strong> There is no server we operate, no account
      to create, no analytics or telemetry. We have no way to know that
      you're using the extension.</p>

    <h2>How your webcam is used</h2>
    <ul>
      <li>
        The video stream from your webcam is processed
        <strong>entirely inside your browser</strong> using MediaPipe
        Pose Landmarker, which runs locally as WebAssembly.
      </li>
      <li>
        Video frames are <strong>never uploaded</strong>, never stored,
        and never sent to any server — including ours or Google's.
      </li>
      <li>
        Pose landmarks (the positions of your ears and shoulders) exist
        only in the memory of the extension's monitor tab. They are
        discarded on every frame.
      </li>
      <li>
        You can revoke camera permission at any time via Chrome's
        site-settings page for the extension.
      </li>
    </ul>

    <h2>What gets sent to ntfy.sh</h2>
    <p>
      When a slouch is detected and the alert cooldown has elapsed, the
      extension makes a single <code>HTTP POST</code> to
      <code>https://ntfy.sh/&lt;your-topic&gt;</code>. The body is a short
      text string such as <em>"Slouch detected — deviation 17.3°"</em>.
      Nothing else is sent — no images, no landmark coordinates, no
      identifiers, no headers beyond a title and priority tag.
    </p>
    <p>
      <strong>ntfy.sh topics are public within the topic name.</strong>
      Anyone who knows your topic string can read the alerts you publish
      to it. Pick an unguessable topic. PostureGuard treats the topic as
      a shared secret and stores it only in your browser's local
      extension storage.
    </p>
    <p>
      ntfy.sh's own privacy practices are documented at
      <a href="https://docs.ntfy.sh/privacy/" rel="noopener">docs.ntfy.sh/privacy</a>.
      PostureGuard has no affiliation with ntfy.sh; it is used only as
      a general-purpose message broker.
    </p>

    <h2>What is stored on your device</h2>
    <ul>
      <li>
        Your <strong>settings</strong> — ntfy topic, sensitivity, alert
        delay, cooldown — are stored using Chrome's
        <code>chrome.storage.local</code> API. They stay on your device
        and are removed when you uninstall the extension.
      </li>
      <li>
        A <strong>session log</strong> (last ~50 events) exists only in
        the memory of the monitor tab and is discarded when you close
        that tab.
      </li>
      <li>
        No cookies, no IndexedDB, no service-worker cache of user data.
      </li>
    </ul>

    <h2>Permissions we request</h2>
    <ul>
      <li>
        <code>notifications</code> — to show a browser notification when
        a slouch is detected, in addition to the ntfy push.
      </li>
      <li>
        <code>storage</code> — to persist your settings between browser
        sessions.
      </li>
      <li>
        <strong>Camera</strong> — asked at runtime the first time you
        press <em>Start Monitoring</em>. Required for pose detection.
      </li>
    </ul>

    <h2>Third parties</h2>
    <ul>
      <li>
        <a href="https://ntfy.sh" rel="noopener">ntfy.sh</a>, when you
        configure a topic and PostureGuard sends slouch alerts.
      </li>
      <li>
        The MediaPipe library and pose model are
        <strong>bundled locally</strong> inside the extension package
        and do not fetch anything at runtime.
      </li>
    </ul>

    <h2>Children</h2>
    <p>
      PostureGuard is a productivity utility not directed at children
      under 13. We do not knowingly collect any information from
      anyone, including children.
    </p>

    <h2>Changes to this policy</h2>
    <p>
      If future versions of PostureGuard begin transmitting or storing
      new categories of data, this page will be updated and the
      "Last updated" date at the top will change. Continued use of the
      extension after a change constitutes acceptance.
    </p>

    <h2>Contact</h2>
    <p>
      Source code and issues:
      <a href="https://github.com/parth1504/thirdeye" rel="noopener">
        github.com/parth1504/thirdeye
      </a>.
    </p>

    <footer>
      PostureGuard is open source and provided as-is with no warranty.
    </footer>
  </main>
 </body>
 </html>
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="utf-8" />
	<meta name="viewport" content="width=device-width, initial-scale=1" />
	<title>PostureGuard — Privacy Policy</title>
	<style>
	:root {
	color-scheme: light dark;
	--bg: #ffffff;
	--text: #1a1a1a;
	--muted: #666;
	--accent: #4a5cff;
	--border: #e5e5eb;
	--surface: #f7f7fa;
	}
	@media (prefers-color-scheme: dark) {
	:root {
	--bg: #0a0a0f;
	--text: #e6e6f0;
	--muted: #8a8aa0;
	--accent: #6c7cff;
	--border: #1e1e2e;
	--surface: #14141f;
	}
	}
	* { box-sizing: border-box; }
	body {
	margin: 0;
	background: var(--bg);
	color: var(--text);
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, sans-serif;
	line-height: 1.6;
	font-size: 16px;
	}
	main {
	max-width: 720px;
	margin: 0 auto;
	padding: 48px 24px 96px;
	}
	header {
	border-bottom: 1px solid var(--border);
	padding-bottom: 16px;
	margin-bottom: 32px;
	}
	h1 {
	margin: 0 0 4px 0;
	font-size: 28px;
	letter-spacing: -0.3px;
	}
	.updated {
	color: var(--muted);
	font-size: 14px;
	}
	h2 {
	margin: 32px 0 10px 0;
	font-size: 18px;
	color: var(--accent);
	letter-spacing: 0.2px;
	}
	p, li { margin: 8px 0; }
	ul { padding-left: 20px; }
	strong { color: var(--text); }
	code {
	font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
	background: var(--surface);
	border: 1px solid var(--border);
	padding: 1px 6px;
	border-radius: 4px;
	font-size: 13px;
	}
	a { color: var(--accent); }
	.callout {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: 8px;
	padding: 16px 18px;
	margin: 24px 0;
	font-size: 15px;
	}
	footer {
	margin-top: 48px;
	padding-top: 16px;
	border-top: 1px solid var(--border);
	color: var(--muted);
	font-size: 13px;
	}
	</style>
	</head>
	<body>
	<main>
	<header>
	<h1>PostureGuard Privacy Policy</h1>
	<div class="updated">Last updated: 2026-07-23</div>
	</header>

	<div class="callout">
	<strong>Short version:</strong> your webcam video and pose data never
	leave your browser. The only thing that ever gets sent anywhere is a
	short text alert to a public ntfy.sh topic that you choose. No
	accounts, no analytics, no tracking.
	</div>

	<h2>What PostureGuard does</h2>
	<p>
	PostureGuard is a Chrome extension that uses your webcam to detect
	when you're slouching and sends a text alert to a
	<a href="https://ntfy.sh" rel="noopener">ntfy.sh</a> topic you
	configure. The alert can be received by a phone, a Garmin watch,
	or any other ntfy client to buzz you into fixing your posture.
	</p>

	<h2>What we collect from you</h2>
	<p><strong>Nothing.</strong> There is no server we operate, no account
	to create, no analytics or telemetry. We have no way to know that
	you're using the extension.</p>

	<h2>How your webcam is used</h2>
	<ul>
	<li>
	The video stream from your webcam is processed
	<strong>entirely inside your browser</strong> using MediaPipe
	Pose Landmarker, which runs locally as WebAssembly.
	</li>
	<li>
	Video frames are <strong>never uploaded</strong>, never stored,
	and never sent to any server — including ours or Google's.
	</li>
	<li>
	Pose landmarks (the positions of your ears and shoulders) exist
	only in the memory of the extension's monitor tab. They are
	discarded on every frame.
	</li>
	<li>
	You can revoke camera permission at any time via Chrome's
	site-settings page for the extension.
	</li>
	</ul>

	<h2>What gets sent to ntfy.sh</h2>
	<p>
	When a slouch is detected and the alert cooldown has elapsed, the
	extension makes a single <code>HTTP POST</code> to
	<code>https://ntfy.sh/<your-topic></code>. The body is a short
	text string such as <em>"Slouch detected — deviation 17.3°"</em>.
	Nothing else is sent — no images, no landmark coordinates, no
	identifiers, no headers beyond a title and priority tag.
	</p>
	<p>
	<strong>ntfy.sh topics are public within the topic name.</strong>
	Anyone who knows your topic string can read the alerts you publish
	to it. Pick an unguessable topic. PostureGuard treats the topic as
	a shared secret and stores it only in your browser's local
	extension storage.
	</p>
	<p>
	ntfy.sh's own privacy practices are documented at
	<a href="https://docs.ntfy.sh/privacy/" rel="noopener">docs.ntfy.sh/privacy</a>.
	PostureGuard has no affiliation with ntfy.sh; it is used only as
	a general-purpose message broker.
	</p>

	<h2>What is stored on your device</h2>
	<ul>
	<li>
	Your <strong>settings</strong> — ntfy topic, sensitivity, alert
	delay, cooldown — are stored using Chrome's
	<code>chrome.storage.local</code> API. They stay on your device
	and are removed when you uninstall the extension.
	</li>
	<li>
	A <strong>session log</strong> (last ~50 events) exists only in
	the memory of the monitor tab and is discarded when you close
	that tab.
	</li>
	<li>
	No cookies, no IndexedDB, no service-worker cache of user data.
	</li>
	</ul>

	<h2>Permissions we request</h2>
	<ul>
	<li>
	<code>notifications</code> — to show a browser notification when
	a slouch is detected, in addition to the ntfy push.
	</li>
	<li>
	<code>storage</code> — to persist your settings between browser
	sessions.
	</li>
	<li>
	<strong>Camera</strong> — asked at runtime the first time you
	press <em>Start Monitoring</em>. Required for pose detection.
	</li>
	</ul>

	<h2>Third parties</h2>
	<ul>
	<li>
	<a href="https://ntfy.sh" rel="noopener">ntfy.sh</a>, when you
	configure a topic and PostureGuard sends slouch alerts.
	</li>
	<li>
	The MediaPipe library and pose model are
	<strong>bundled locally</strong> inside the extension package
	and do not fetch anything at runtime.
	</li>
	</ul>

	<h2>Children</h2>
	<p>
	PostureGuard is a productivity utility not directed at children
	under 13. We do not knowingly collect any information from
	anyone, including children.
	</p>

	<h2>Changes to this policy</h2>
	<p>
	If future versions of PostureGuard begin transmitting or storing
	new categories of data, this page will be updated and the
	"Last updated" date at the top will change. Continued use of the
	extension after a change constitutes acceptance.
	</p>

	<h2>Contact</h2>
	<p>
	Source code and issues:
	<a href="https://github.com/parth1504/thirdeye" rel="noopener">
	github.com/parth1504/thirdeye
	</a>.
	</p>

	<footer>
	PostureGuard is open source and provided as-is with no warranty.
	</footer>
	</main>
	</body>
	</html>
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