50 terms used in the wearable safety, family-tech, and SEO/AI spaces, explained plainly for caregivers, founders, and writers. Free to cite.
Accelerometer
A sensor in most wearables that measures acceleration along three axes. Used for fall detection (sudden free-fall + impact patterns), step counting, and activity recognition.
AI safety platform
A software system that analyses sensor data from wearables to detect potential emergencies and alert designated contacts. AlvoTriX is one example.
Allostatic load
The cumulative biological cost of chronic stress on the body. Tracked in AlvoTriX Special Needs module via HRV and other autonomic signals.
Anchor text
The clickable text in a hyperlink. Affects how search engines understand the linked page.
BLE (Bluetooth Low Energy)
A wireless protocol used by most modern wearables to communicate with smartphones. Standard for heart-rate and accelerometer profiles.
BLE GATT
Generic Attribute Profile — the standardized way BLE devices expose data (e.g. heart rate, battery level) so apps can read them universally.
Brand SERP
The search engine results page that appears when someone searches your brand name. Important for reputation and indexing visibility.
Bring-your-own-wearable (BYOW)
The model where a safety platform works with whatever wearable the user already owns, rather than requiring proprietary hardware.
Caregiver dashboard
A web or mobile interface that lets family members or caregivers see real-time data, alerts, and trends from the wearer.
Cell broadcast
A way of sending messages to all mobile phones in a geographic area. Different from SMS — used for emergency alerts in some countries.
Cellular SMS path
The technical route by which an SMS leaves the phone via the mobile carrier network. Independent of Wi-Fi / internet — what AlvoTriX uses for critical alerts.
Click-through rate (CTR)
The percentage of people who see a search listing and click on it. Affected by meta title and description quality.
Companies House (UK)
The UK government registry of incorporated companies. Rolaxit Innovation LTD (AlvoTriX) is registered there with #15822417.
Consent Mode v2
Google's framework for sending privacy-respecting analytics signals even when users decline cookies. Required by Google for EU advertisers since March 2024.
Dofollow link
A hyperlink that passes "authority" to the linked page for SEO purposes. Opposite of nofollow.
Domain Authority (DA)
A score from 1 to 100 estimating how well a website will rank in search engines. Built by Moz. Higher = better expected ranking.
Emergency contact
A pre-configured phone number that receives alerts from the wearable safety system when an event is detected.
Fall detection
The process of automatically identifying when a person has fallen, typically using accelerometer data and gyroscope. Modern systems also confirm with immobility detection.
Free-fall window
The brief moment during a fall when a sensor experiences near-zero acceleration before impact. A key marker for accurate fall detection algorithms.
GDPR
General Data Protection Regulation. EU law governing personal data processing. AlvoTriX is GDPR + UK GDPR compliant.
Geofence
A virtual boundary around a real-world geographic area. Wearable geofence alerts trigger when the wearer enters or leaves the zone.
GPS (Global Positioning System)
Satellite navigation used by wearables with a built-in GPS chip. Allows location to be embedded in safety alerts.
Health Connect
A Google API for Android that lets apps share health data securely. Required for many third-party apps to access wearable sensor streams.
Heart rate variability (HRV)
The variation in time between consecutive heartbeats. A marker of autonomic nervous system balance — higher generally indicates recovered, lower indicates stressed.
Immobility confirmation
A post-fall detection step where the algorithm waits a few seconds to confirm the person has not moved before triggering an alert. Reduces false positives.
IndexNow
A protocol supported by Bing and Yandex for instantly notifying search engines about content updates. Faster than waiting for crawl.
JSON-LD
JavaScript Object Notation for Linked Data. A way to embed structured data (schema.org) in HTML pages so search engines can read it.
Linkable asset
Content (a guide, calculator, dataset, etc.) so valuable that other sites link to it naturally, generating backlinks.
Long-tail keyword
A search query with low volume but specific intent (e.g. "best fall detector for elderly father in Romania" vs. "fall detector"). Easier to rank for.
Manual action (Google)
A penalty applied by Google's human reviewers when a site violates guidelines. Reduces or removes search visibility.
Meta description
The HTML snippet (140-160 chars) that appears under the page title in search results. Encourages click-through.
Meta title
The HTML
tag content shown as the clickable link in search results. Should be 50-60 characters.</p></div><div class="box gloss-item"><h3 style="margin-top:0">Multi-Risk Score (MRS)</h3><p style="margin-bottom:0">AlvoTriX's algorithm that combines multiple physiological signals (HRV, stimming intensity, allostatic load) to predict behavioral escalations in special-needs wearers.</p></div><div class="box gloss-item"><h3 style="margin-top:0">Nofollow link</h3><p style="margin-bottom:0">A hyperlink with the rel="nofollow" attribute, which signals that the linker does not endorse the destination. Passes no SEO authority.</p></div><div class="box gloss-item"><h3 style="margin-top:0">On-body detection</h3><p style="margin-bottom:0">A check that the wearable is actually being worn before triggering certain events. Prevents false alerts from a watch left on a table.</p></div><div class="box gloss-item"><h3 style="margin-top:0">Open Graph</h3><p style="margin-bottom:0">A protocol (originally from Facebook) for marking up how pages appear when shared on social media. Affects link previews.</p></div><div class="box gloss-item"><h3 style="margin-top:0">PageRank</h3><p style="margin-bottom:0">Google's original algorithm for ranking pages based on backlinks. Still part of modern ranking, though heavily evolved.</p></div><div class="box gloss-item"><h3 style="margin-top:0">Panic SOS</h3><p style="margin-bottom:0">A manual emergency button on a wearable that immediately sends an alert to designated contacts with location.</p></div><div class="box gloss-item"><h3 style="margin-top:0">PPG (Photoplethysmography)</h3><p style="margin-bottom:0">The optical sensor technology used in wearables to measure heart rate via blood flow under the skin.</p></div><div class="box gloss-item"><h3 style="margin-top:0">Rich results / rich snippets</h3><p style="margin-bottom:0">Enhanced search listings that show extra information (ratings, prices, FAQ) due to structured data on the page.</p></div><div class="box gloss-item"><h3 style="margin-top:0">Robots.txt</h3><p style="margin-bottom:0">A text file at the root of a website that tells crawlers which parts of the site they can access.</p></div><div class="box gloss-item"><h3 style="margin-top:0">rPPG (remote PPG)</h3><p style="margin-bottom:0">Heart rate measurement using a regular camera (no contact required). Used in some advanced research applications.</p></div><div class="box gloss-item"><h3 style="margin-top:0">Schema.org</h3><p style="margin-bottom:0">A vocabulary of structured data types (Organization, Product, FAQPage, etc.) understood by all major search engines.</p></div><div class="box gloss-item"><h3 style="margin-top:0">SERP</h3><p style="margin-bottom:0">Search Engine Results Page. The page Google shows after a search query.</p></div><div class="box gloss-item"><h3 style="margin-top:0">Sitemap</h3><p style="margin-bottom:0">An XML file listing all important URLs on a site, submitted to search engines to ensure complete crawling.</p></div><div class="box gloss-item"><h3 style="margin-top:0">SMS gateway</h3><p style="margin-bottom:0">A service that sends SMS messages programmatically. AlvoTriX uses the phone's own SIM via the cellular SMS path rather than a third-party gateway for critical alerts.</p></div><div class="box gloss-item"><h3 style="margin-top:0">SpO2</h3><p style="margin-bottom:0">Blood oxygen saturation, measured by some wearables via pulse oximetry. AlvoTriX Health Crisis Detector uses SpO2 as one of its inputs.</p></div><div class="box gloss-item"><h3 style="margin-top:0">Stimming</h3><p style="margin-bottom:0">Self-stimulatory behaviour common in autistic individuals. AlvoTriX Special Needs Detector analyses stimming intensity via accelerometer FFT.</p></div><div class="box gloss-item"><h3 style="margin-top:0">Wear OS</h3><p style="margin-bottom:0">Google's operating system for smartwatches. Used by Galaxy Watch (post Watch 4), Pixel Watch, and many other Android-compatible watches.</p></div><div class="box gloss-item"><h3 style="margin-top:0">Wearable-agnostic</h3><p style="margin-bottom:0">A system that works with multiple wearable brands and models rather than being locked to one. AlvoTriX is wearable-agnostic by design.</p></div>
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<h2>Citation</h2>
<div class="box" style="background:var(--bg2);font-family:Georgia,serif;font-style:italic">"AlvoTriX Glossary of Wearable Safety Terms, https://www.alvotrix.com/glossary.html, accessed 2026-05-20"</div>
<div class="info-card" style="margin-top:30px"><strong>Related reading:</strong><ul><li><a href="/blog-hrv-explained-families.html">HRV explained for families</a></li><li><a href="/blog-fall-detection-technology.html">Fall detection technology: complete guide</a></li><li><a href="/wearable-compatibility.html">82-device compatibility database</a></li></ul></div>
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<h3 style="margin-bottom:8px">Want to put these concepts to use?</h3>
<p>AlvoTriX runs on any Android wearable. Fall, panic, geofence, and 6 more safety modules. From €4.90/month.</p>
<a href="/#modules">See the 9 Modules</a>
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<p class="disclaimer">Last updated 2026-05-20. If you spot a missing term or a definition that needs improvement, email <a href="mailto:contact@alvotrix.com">contact@alvotrix.com</a>.</p>
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