Browser Fingerprint Research

EchoScan publishes versioned browser-fingerprint research so developers, security teams, and researchers can evaluate a stated claim against its method, aggregate evidence, and limitations.

Published study

Browser Fingerprint Stability Study v1.0 is published. The full report is currently available in Chinese.

• Valid measurements: 94
• Device environments: 3
• Device / Browser combinations: 8
• Full report: Browser Fingerprint Stability Study v1.0
• Aggregate data: results-summary.csv
• Research JSON: research-summary.json

Published findings

• Persistent device identity remained generally consistent across the tested browser restart, site-data clearing, network-change, and private-browsing conditions.
• Firefox, Safari, Windows Laptop Chrome, and Brave showed session-context identity changes in the tested environments.
• In the tested Brave environment, the ordinary-window context recovered after two independent Private sessions, while the two Private sessions formed distinct, internally stable context states.
• Device continuity, browser session context, and Network Status behaved as separate information dimensions in the tested environments.

Scope and limitations

The results apply to the 3 tested device environments and 8 Device / Browser combinations. The study evaluates identity-result consistency; it does not calculate an overall identification accuracy, false-positive rate, false-negative rate, or Network Status accuracy.

Public methodology

A public EchoScan study states the research question and records the scope, test method, sample count, metrics, aggregate results, limitations, and data availability. Environment information is included when it is material to interpreting the conclusion. Published data is minimized to avoid exposing participant or operational identifiers.

EchoScan public research publishes the methodology, scope, aggregate evidence, and limitations needed to evaluate the published claim. Product implementation details unrelated to evaluating that claim are outside the public research materials.

Data availability

The aggregate CSV and machine-readable Research JSON are public at the links above. The JSON is the source for the study version, measurement count, environment and combination counts, report URL, data URL, findings, and limitations used by the public research indexes and AI discovery documents.

Research questions

What research is published here?

Browser Fingerprint Stability Study v1.0 publishes 94 valid measurements across 3 device environments and 8 Device / Browser combinations, with a Chinese report, aggregate CSV, Research JSON, findings, and limitations.

What is the public research boundary?

EchoScan publishes the methodology, scope, aggregate evidence, and limitations needed to evaluate the study claim. Product implementation details unrelated to that evaluation are outside the public research materials.

What does the public methodology record?

A public study records its research question, scope, test method, sample count, metrics, aggregate results, limitations, and data availability, plus environment information when it is material to the conclusion.