Disclosure notice: This is a true account of a frontline investigation – written in collaboration with Semantics 21. This may contain accounts that some readers find upsetting.
This case study is based on a real experience shared by a law enforcement/investigation agency professional and written in collaboration with Semantics 21. It is presented in a first-person format to reflect the original voice and lived reality of the investigator, with all identifying information removed or adapted in accordance with UK GDPR and safeguarding standards.
Introduction
Location data is often critical. But what happens when internet access is restricted and your analysis has to be air-gapped?
That was the challenge faced by a Detective Inspector working a case involving thousands of illicit images and videos.
S21 LASERi‑X delivered a solution that didn’t need a signal to be effective.
Offline GPS Analysis
The inspector wasn’t looking to identify devices — she was focused on where the images were taken. In particular, whether any matched a known area of interest.
Using S21 LASERi‑X’s offline mapping capability, the inspector:
- Imported data from various third-party tools
- Let the AI narrow down material based on faces, age and abuse content
- Mapped image locations without needing internet access
With a few clicks, the material was filtered down to only what was captured in the geographic zone of concern.
S21 LASERi‑X visualised GPS findings without the cloud — and helped locate a child in danger.
Using location-based filtering and visualisation, the inspector found what mattered: a clear link between the content and the suspect’s residence. Crucially, one of the victims was identified and safeguarded as a direct result.
“Traditional tools requiring online access would’ve stalled the analysis.”
When Offline is the Only Way.
Traditional tools requiring online access would’ve stalled the analysis. With S21 LASERi‑X, the location data worked offline — and the investigation didn’t miss a beat.
S21 solutions mentioned
S21 LASERi-X
The complete solution for rapid victim identification, CSAM categorisation and media review
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