The Duolingo English Test’s Two-Camera System Explained: How It Works and Why It's Important

The Duolingo English Test (DET) has become a preferred choice for students planning to study abroad, offering a flexible, accessible, and affordable alternative to traditional English proficiency exams. As an online test that can be taken from home, the DET is especially convenient for Indian students navigating application deadlines, visa processes, and university admissions. With acceptance from over 5500 universities globally—including prestigious institutions in the US, UK, Canada, and Australia—the DET is levelling the playing field for students from all backgrounds.

This Story also Contains

1. The Mechanics of the Two-Camera System
2. Requirements:
3. How It Works: Step-by-Step Guide

As universities increasingly turn to remote testing solutions, ensuring the security and integrity of these tests is crucial. To proactively enhance its security measures to ensure the test is as secure as possible, the Duolingo English Test (DET) has introduced a new two-camera system. This system, which uses a computer’s webcam and a smartphone’s camera, provides a complete view of a test taker’s testing environment. As more universities worldwide accept DET scores, students need to understand how this new feature works and how it benefits them. So, what’s the two-camera system all about, and why does it matter for students?

The Mechanics of the Two-Camera System

1. Primary Camera (Computer Webcam):

• Captures the test-takers face and upper body
• Monitors eye movements and general behaviour

2. Secondary Camera (Smartphone):

• Provides a wider view of the testing environment
• Records the computer screen and keyboard

Requirements:

Test takers will need:

• A laptop or computer: which will be the primary camera & device

• A fully charged smartphone with a camera: which will be the secondary camera

• A reliable internet connection

• A well-lit, quiet room

• Passport for id proof

• A fully charged smartphone with a camera

• A stable object to prop up your phone (e.g., a book or phone stand)

• A phone charger (optional)

One can borrow a phone if they don't own one. They may also use a tablet if needed, however a secondary laptop cannot be used.

How It Works: Step-by-Step Guide

1. Setup: Scan a QR code with a smartphone to activate the secondary camera.

2. Positioning: Place the phone to capture both the computer screen and keyboard.

3. Synchronisation: Both cameras feed sync and are encrypted in real time.

4. Monitoring: AI algorithms analyse the feeds for irregularities or rule violations.

5. Review: Human proctors review the footage if the AI detects any suspicious activity.

Remember to keep the phone's browser window open and ensure the secondary camera is recording continuously throughout the entire test. The phone must remain positioned towards your computer for the test to be considered valid. Recording will automatically stop once the test session is complete. Watch this video to understand how to set up the second camera for the DET.

This system not only deters cheating but also reassures honest test-takers that their efforts will be recognized and validated. Providing a clear, comprehensive view of the testing environment, leaves no room for doubt about the legitimacy of a student's score. The two-camera system is not just about security; it's about empowering students to demonstrate How It Works: Step-by-Step Guidetheir English skills with absolute confidence.