---
title: "What is fingerprinting?"
date: 2026-02-14
source: "https://telegra.ph/What-is-fingerprinting-02-14"
tags:
  - "telegraph"
---


**Fingerprinting** is a tracking method that identifies a user based on the unique combination of their device, browser, and system characteristics —*without* cookies.

Think of it as a “digital scent trail.”

![](c98b3f6109091851a49ee630e23965.png)

*your browser gives you away; It leaves behind a digital scent trail*

A fingerprint can include:

- screen resolution
- installed fonts
- GPU model
- CPU architecture
- timezone
- language
- canvas rendering quirks
- WebGL output
- audio processing signature
- browser version
- OS version
- touch support
- battery API
- media codecs
- list of enabled features
- IP address

Each of these is not unique alone — but combined, they form a **statistically unique profile**.

Fingerprinting is powerful because:

- it works even in private/incognito mode
- it persists across sessions
- it bypasses cookie blockers
- it’s invisible to the user

This is why ad‑tech loves it.