WriteTrack Documentation

WriteTrack is a JavaScript SDK that analyzes how text was entered, not what was written. It captures behavioral signals like timing, rhythm, and corrections to determine if content was typed by a human or pasted.

Key Features

• 100% Client-side — No data leaves the browser
• Framework agnostic — Works with vanilla JS, React, Vue, Svelte
• Lightweight — Under 3KB gzipped, zero dependencies
• Fast — Less than 1ms overhead per keystroke

Quick Example

import { WriteTrack } from 'writetrack';

const tracker = new WriteTrack('#essay-field');

// On form submit
const { isAuthentic, confidence } = tracker.analyze();
if (!isAuthentic) {
  flagForReview();
}

How It Works

WriteTrack instruments your text inputs and captures behavioral signals:

1. Timing intervals — Milliseconds between keystrokes
2. Rhythm variance — Consistency of typing cadence
3. Correction patterns — Backspaces, rewrites, hesitation
4. Pause detection — Natural thinking breaks

Human typing has natural variation. Pasted or AI-generated text arrives all at once with no behavioral fingerprint.

Use Cases

• Education — Flag essays that were pasted rather than composed
• Research — Distinguish thoughtful responses from copy-paste boilerplate
• Compliance — Add a behavioral layer to form attestations

Getting Started

→ Quickstart guide — Install and integrate in 5 minutes

→ API Reference — Full SDK documentation

→ Examples — Common integration patterns