Veriton Zro – Verified Camera

Veriton Zro is a camera for photos you need to prove. Take a photo with Veriton Zro, share a link, and anyone can check their own copy of it on zro.no. Your photo is never uploaded: Veriton Zro sends only a fingerprint, signed on your phone.

HOW IT WORKS
1. Take a photo in Veriton Zro. It is saved to your photo library with a small strip at the bottom that names Veriton Zro.
2. Veriton Zro makes a fingerprint of the photo and signs it with a key in your phone's secure hardware. Android Key Attestation confirms that the key belongs to the Veriton Zro app on a genuine Android device.
3. Create a proof link (zro.no/p/…) and share it with the photo.
4. Anyone with the link can drop their copy of the photo on the page. The check runs in their browser; only fingerprints are compared.

WHAT THE CHECK SHOWS
- Identical file, or the same image data with only metadata changed
- Converted file format (for example JPEG to PNG)
- Resized, cropped or recompressed
- Brightness, contrast and colour changes
- Blurred or sharpened
- A 16×16 map over the copy: red for changed content, orange for local colour changes, blue for changed sharpness

The checklist says what matches and what differs from the registered original. It cannot catch every possible edit, and a heavily changed copy may simply show no match.

YOUR PHOTO STAYS WITH YOU
zro.no never receives your photo. The fingerprint holds a coarse 16×16 colour grid and some numbers per area, too coarse to show details, plus the capture time. zro.no also keeps a coarse content map (which areas look like people, animals, vehicles and so on, with rough outlines); it is never shown publicly. A photo you share with its proof carries that map, so the recipient can check it without going online. You can delete a proof link at any time from the phone that created it.

GOOD FOR
- Damage photos for insurance claims
- Condition photos when renting or moving out
- Photos for sales listings
- Journalists, photographers and anyone whose photos get questioned

WHAT VERITON ZRO PROVES, AND WHAT IT DOES NOT
Veriton Zro proves that a photo was registered from the Veriton Zro app on a genuine Android device or iPhone, when it was registered, and how a copy differs from it. It cannot tell what was in front of the camera.

MORE
- Verify: open a zro.no link or check a photo file in the app
- Shared links: see and manage all your proof links
- Requires Android 11 or later. Proof links need secure hardware with Key Attestation and a locked bootloader

Privacy Policy: https://zro.no/privacy-policy