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Is this video coming from a real camera?

On a video call you cannot tell. Software can pretend to be a camera and feed a call anything at all. In 2024 an employee at the engineering firm Arup paid out US$25 million on a video call where every colleague was a deepfake. Witness proves the camera is real, and whose it is, to the person on the other end.

Book a live demo A real call with us. Watch your own browser verify it, and watch it catch the switch.

How it works

Set up once

Prove your passport, pair your phone, enrol your camera. About ten minutes, one time.

Take the call

Select Witness Camera in Zoom, Meet or Teams. Nothing to install for anyone else.

Share the link

Drop your verification link in the meeting chat. It lives only as long as the call.

They see proof

Their own browser checks the evidence. A switched camera turns the badge red in seconds.

What your counterparty sees

Yes, checked seconds ago

The checks run in their browser, against keys pinned into the page. The service cannot make them pass.

What it does not claim

Witness proves which camera produced the video and whose camera it is. It does not prove a live person is in front of it, and it does not claim a call cannot be a recording of a screen. It says exactly what it can prove, on the page your counterparty reads.

We think a trust product should be precise about its limits. That precision is the product.

For the technical reader

The camera proof reads the sensor's own physical noise, the same mechanism behind Apertrue's photo verification. The claims are written down:

Real cameras. Real people. Proven.

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