Understanding Online Tracking Protection on iOS
Every time you browse the web on your iPhone, dozens of companies collect data about you. Most of it happens silently in the background.
How Trackers Work
Tracking scripts use various techniques:
- Third-party cookies that follow you across sites
- Browser fingerprinting using device attributes
- Tracking pixels embedded in pages
- Session replay scripts that record interactions
- Canvas and audio context fingerprinting
Safari Limitations
Safari Intelligent Tracking Prevention blocks many cross-site trackers, but sophisticated trackers have adapted.
Dedicated Online Tracking Protection
A content blocker like Wonder Blocker adds Online Tracking Protection:
- Blocks known tracking domains proactively
- Detects fingerprinting attempts in real-time
- Prevents tracking beacons from loading
- Stops session replay scripts
Why Local Processing Matters
When blocking is done locally:
- Your browsing habits never leave your phone
- No central database of your behavior exists
- There is nothing to leak or sell
- Protection works even without internet access
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