Fig 1: The real-time biometric retina tracking simulation matrix evaluating optical synchronization.
Understanding Biometric Retina Tracking
Welcome to Level 39: Facial Exam. You successfully navigated the moral dilemma in Level 38: Tough Decisions, and now the system requires physical biometric verification. The "Facial Exam" simulates a high-security retina scanner designed to filter out mechanical DOM manipulation.
Step-by-Step Tracking Strategy
The game evaluates smooth, continuous, reactive motor functions. Follow this protocol to maintain your lock and clear the test:
- Engage the Scanner Viewport: Hover or touch inside the dark canvas area to spawn your targeting crosshair reticle.
- Acquire the Pupil Target: The inner black pupil of the simulated eye will dart around erratically. Move your reticle over it.
- Maintain the Lock: The eye moves using saccadic motionβquick, jerky shifts. Anticipate the movements and keep the reticle locked.
- Fill the Biometric Progress Bar: Staying locked on increases progress steadily. Slipping off decays progress rapidly. Hit 100% to verify your humanity and unlock Level 40: Slot Machine.
Why Saccadic Movement Defeats Auto-Tracking Bots
Why does following a circle on a screen act as a Turing test? Automated scripts rely on predictable intervals and static HTML structures. This level employs two powerful client-side obfuscation techniques to completely block headless browsers.
Off-Screen Canvas Rendering and Lerping Algorithms
First, the entire eye is rendered natively within an HTML5 <canvas> environment. There are no <img src="pupil.png"> elements for a bot to attach coordinate trackers to. Second, the movement of the pupil is generated via a randomized saccadic lerping algorithm. It picks a random vector, smoothly darts to it, rests for a randomized millisecond interval, and repeats.
Because a bot cannot read the internal JavaScript state arrays, it cannot predict where the eye will go next. Only an organic human eye processing the visual canvas frame-by-frame can react and follow the target.
Prepare your luck, because the chaotic variance of Level 40: Slot Machine awaits you next.
Frequently Asked Questions
How do I beat the Facial Exam level?
You must use your mouse or finger to track the moving pupil of the digital eye on the screen. Hold your focus on it until the scan reaches 100%.
Why does the eye move so erratically?
The engine simulates 'saccadic movement'βthe rapid, involuntary darting of human eyes. This unpredictable motion path completely breaks scripted auto-tracking bots.
Why is my progress dropping?
If your cursor slips outside the hitbox of the moving pupil, the biometric scan loses its lock and progress decays rapidly. You must re-acquire the target.
Does the game actually use my webcam?
No. The entire 'Facial Exam' is a client-side digital simulation rendered on an HTML5 canvas. No camera permissions are requested or required.