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This guide explains how to capture, view, and manage evidence photos in the Cadmus MDT app.

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Overview

Evidence capture lets officers take photos tied to specific incidents. Each photo is tagged with:
  • Incident — Call number and incident ID
  • Unit — Your assigned unit
  • Officer — Your name and badge number
  • Location — GPS coordinates (when available)
  • Time — Capture timestamp (UTC)
Photos are stored only in the app’s private storage. They are not saved to the device photo gallery.

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Capturing evidence

1

Open the camera

From the Calls screen, when you’re assigned to a call, tap the camera icon (Capture evidence photo). The camera opens in full screen with the back camera.
2

Take a photo

Point the camera at the scene and tap the capture button (large circle). The app shows a preview of the captured image.
3

Save or retake

Tap Save to store the photo and return to the call (you’ll see “Evidence photo saved”), or Retake to discard and shoot again.

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Requirements

  • You must be logged in to save evidence.
  • You must be assigned to the call to capture evidence for that incident.

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Viewing evidence

  • Open the Evidence section from the app navigation.
  • Photos are grouped by incident (call number).

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Opening an incident

  • Tap an incident card to open its photo grid.
  • Photos are shown newest first.

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Viewing a single photo

  • Tap a photo to open it full screen.
  • A metadata panel shows call number, unit, officer, date/time, GPS, and SHA-256 hash.
  • Tap X or swipe back to close.

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Deleting photos

  • In the incident photo grid, open a photo and use delete.
  • Deletion is recorded in the audit log.

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Offline use

  • Capture and view work offline.
  • If GPS is unavailable, coordinates may show as 0,0 — the photo is still saved.
  • You must be logged in to save while offline.

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Error messages

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Tips

  • Capture photos as soon as possible after arriving on scene.
  • Ensure good lighting and a clear view of the subject.
  • Use Retake if the image is blurry or poorly framed.
  • Check the metadata panel to confirm location and timestamp for reports.
Evidence photos are stored in the app’s private storage only — not the device gallery. Follow agency policy for chain of custody and authorized disclosure.