End-users recommendations

The PD Measurement solution works for everyone, regardless of their pupillary distance — as long as the measurement is performed under good conditions.

Environmental Conditions

To ensure accurate and reliable results:

Choose a well-lit environment (avoid areas that are too dark or too bright).
Avoid underexposed or overexposed lighting.
Avoid a moving or dynamic background behind you.

Accessories

Prepare a stable support (e.g., a stand or holder) to properly position your smartphone or device.
Have a standard-format card (credit card size) clearly visible on your face.

The standard-size card is essential for the technology to determine scale and ensure high measurement accuracy.

User Placement

Stand 70 to 80 cm (around arm’s length) from your device for optimal accuracy.
Place your device securely on a stable surface — do not hold it in your hands.
Make sure your ears are visible.
You can keep your glasses on, unless strong reflections affect visibility — in that case, try without them.
When prompted, place the card flat and centered over your mouth.

Device

Before starting the experience:

Ensure your operating system (OS) is up to date.
Ensure your browser is up to date.
Verify that your device has a front-facing camera with at least HD resolution.
Confirm that your browser or OS settings allow camera access.

Network

For a smooth experience:

Use a stable and reliable internet connection.
Be aware that high latency or low bandwidth may affect performance.