Discover what information your browser reveals without you knowing. This is educational - no data leaves your device.
We can see all the data below without your consent. Now imagine how much companies know about you when they ask you to "accept cookies" and store their tracking scripts in your browser.
Every website you visit, every click you make, every second you spend - it's all being collected, analyzed, and sold to advertisers. And most of this happens before you even see a cookie consent banner.
This page demonstrates tracking techniques for educational purposes. All data stays on your device and is not sent to any servers.
Information your browser automatically reveals to websites:
How websites store data on your device to track you across visits:
Unique characteristics that can identify your browser:
Your interactions and behavior patterns being monitored:
Based on your behavior, here's what advertisers might think about you:
This is what most websites send to third-party trackers in under 1 second of your visit.
Your browser reveals this information automatically, often without your knowledge or consent.
Not all tracking is bad. Here's when it can actually protect you:
Banks use device fingerprinting to detect suspicious login attempts and prevent fraud.
Example: "Unusual login from new device detected"
Security systems identify cyber attacks and protect against data breaches.
Example: Blocking suspicious IP addresses and bot attacks
Email providers filter out spam and phishing attempts based on sender patterns.
Example: Gmail's spam detection and security warnings
Parental controls and content filtering protect children online.
Example: Age-appropriate content and screen time limits
Most tracking happens without your explicit permission or knowledge.
Example: Hidden trackers in "free" apps and websites
Your data is sold to advertisers, not used to protect you.
Example: Facebook selling your interests to advertisers
You don't know what data is collected or how it's used.
Example: Complex privacy policies that hide the truth
You can't choose which apps get your data or opt out easily.
Example: "Accept all cookies or leave" ultimatums
Apps should ask: "Can we use your location for fraud protection?"
Clear explanation: "We use this to protect your account from fraud"
Easy opt-out: "Turn off location tracking for ads but keep fraud protection"
Ad blockers, tracker blockers, and privacy-focused browsers
Delete cookies, localStorage, and sessionStorage
Hide your IP address and location
Review and limit what websites can access
Self-evolving system