# web tracking

> practice by which operators of websites collect, store and share information about a particular user's activity on the World Wide Web

**Wikidata**: [Q7978844](https://www.wikidata.org/wiki/Q7978844)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Web_tracking)  
**Source**: https://4ort.xyz/entity/web-tracking

Here’s the structured knowledge entry for **web tracking**:

---

## Summary  
Web tracking is the practice of collecting, storing, and sharing data about a user's online activity across websites. It is primarily used for web analytics, advertising, and surveillance, enabling operators to monitor behavior and personalize content. This data can include pages visited, time spent, and interactions with ads or links.

## Key Facts  
- **Purpose**: Used for web analytics, usability testing, online advertising, espionage, and surveillance.  
- **Subclass of**: Analytics and social issue (per Wikidata).  
- **Related techniques**: Includes cross-device tracking, CNAME cloaking, and cookie syncing.  
- **Aliases**: Data tracking, pistage utilisateur, traçage web, ウェブ トラッキング, 追踪.  
- **Distinct from**: Website tracking, email tracking, and general tracking systems (per Wikipedia).  
- **Freebase ID**: `/m/09k4rq7`.  
- **Microsoft Academic ID (discontinued)**: `2777732076`.  
- **Wikipedia coverage**: Available in 9 languages (ar, ca, en, es, fr, hy, id, ru, vi).  

## FAQs  
### Q: What is web tracking used for?  
A: It is primarily used for analyzing user behavior, targeting ads, improving website usability, and surveillance.  

### Q: How does web tracking differ from website tracking?  
A: Website tracking refers to monitoring activity on a single site, while web tracking spans multiple sites and platforms.  

### Q: What are common web tracking techniques?  
A: Techniques include cookies, fingerprinting, CNAME cloaking, and cross-device tracking.  

## Why It Matters  
Web tracking plays a pivotal role in digital marketing and user experience optimization, enabling businesses to tailor content and ads based on behavior. However, it raises privacy concerns, as it often occurs without explicit user consent. Techniques like cookie syncing and cross-device tracking further amplify these concerns by linking data across platforms. Regulatory frameworks like GDPR aim to curb misuse, but debates persist over balancing personalization with privacy.  

## Notable For  
- **Scope**: Tracks activity across multiple websites, not just individual pages.  
- **Techniques**: Includes advanced methods like CNAME cloaking to bypass ad-blockers.  
- **Privacy impact**: Central to debates about user consent and data ownership.  

## Body  
### Techniques  
- **Cookie syncing**: Shares user IDs between trackers to link data.  
- **Cross-device tracking**: Correlates activity across smartphones, tablets, and computers.  
- **CNAME cloaking**: Masks third-party trackers as first-party domains to evade blockers.  

### Applications  
- **Advertising**: Targets users based on browsing history.  
- **Analytics**: Measures engagement metrics like bounce rates and session duration.  
- **Surveillance**: Governments and organizations monitor online behavior.  

### Privacy Concerns  
- Often operates without transparent user consent.  
- Federated Learning of Cohorts (FLoC) proposes anonymized tracking but faces criticism.  

## Schema Markup  
```json
{
  "@context": "https://schema.org",
  "@type": "Thing",
  "name": "Web tracking",
  "description": "Practice by which operators of websites collect, store, and share information about a user's activity on the World Wide Web.",
  "sameAs": [
    "https://www.wikidata.org/wiki/Q7974759",
    "https://en.wikipedia.org/wiki/Web_tracking"
  ],
  "additionalType": "Analytics"
}