Chain of custody (digital)
Definition
The documented record of who created, processed, stored, and accessed a digital file from its acquisition to its presentation in court. For spatial data, this includes file checksums, processing logs, and version-controlled storage.
Related terms
- Coordinate reference system (CRS)
- The mathematical framework defining how coordinates relate to real-world positions on the Earth's surface. All layers in a forensic GIS must share...
- Georeferencing
- The process of assigning real-world coordinates to a raster image or survey grid using known control points. A ground-penetrating radar grid, for...
- Route cost analysis
- A GIS operation using a friction or cost surface (based on slope, vegetation, and path availability) to model the least-effort path between...
- Search coverage layer
- A polygon or raster attribute layer recording which portions of the search area have been surveyed, the method used, and the outcome....
- Weighted overlay
- A GIS operation that combines multiple raster layers into a single output by multiplying each layer by a weight and summing the...
Explained in
- GIS Integration for Search ManagementThe documented record of who created, processed, stored, and accessed a digital file from its acquisition to its presentation in court. For spatial data, this...