Research and guides

Understand the signals websites can read.

Plain-language explanations of browser fingerprinting, cross-site tracking, and the engineering tradeoffs behind practical privacy protection.

Browser fingerprintingAugust 24, 20269 minute read

The silent audio test that can follow a browser across the web

A page does not need to play audible media to exercise your audio stack. Learn how a generated waveform becomes a browser measurement, why it can survive cookie clearing, and how per-site isolation breaks cross-site reuse.

Read the guide
Inside the guide

From silent signal to tracking identifier.

The complete path from browser audio processing to a privacy-relevant fingerprint, explained without assuming a security background.

01

Silent processing

Why an AudioContext can perform real work without a song, video, or audible tone.

 02

Cross-site identity

How a small audio measurement becomes more useful when combined with other browser signals.

 03

Defensive design

Why stable per-site identities protect privacy without the breakage caused by constant random noise.
Practical privacyAugust 24, 20268 minute read

Who needs audio fingerprint protection?

A practical guide for privacy-conscious users, agencies and commerce operations, authorized testing teams, security analysts, journalists, legal professionals, and researchers—with clear limits on what one browser extension can protect.

Explore the use cases

See what your browser reveals.

Run the local audio fingerprint diagnostic, then learn how SoundPrint Guard isolates that signal for every site.

Run the diagnosticRead the security model