Live optical-signature detector

Present or absent, in under a second

Aim a camera at your Lightmark beacon and watch the verdict flip in real time, with the affected pixels lit up on the feed. Detection runs in your browser — nothing is uploaded, no account required.

Start the camera and point it at your beacon, or upload a clip that contains one.

Scanning…

Sweeping 2–20 Hz for a carrier

Signal strength—

detect ≥ 30%

Carrier

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Coverage

—

Colour

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Using your beacon

  1. 1. Power your beacon and start it emitting (hold the button on the ESP32 build, or open the on-screen beacon).
  2. 2. Fill the framed centre with the emitting LEDs — closer is stronger.
  3. 3.Hold steady ~1 second. Present turns green and lights the affected pixels; remove the beacon and it drops to No Lightmark.

No beacon in reach?

Turn any second screen into a Lightmark emitter and point this detector at it.