[ 03 ] Workbenches

A calibrated bench for every discipline.

Five purpose-built examination environments share one evidence store, one annotation model and one audit trail — so tools change, but custody never does.

WBS-13-T3 Spectral workbench — ink discrimination with CVD-safe heatmap and mean spectra per region.

WBI

Imaging bench

Multispectral capture and lighting comparison, calibrated magnification, measurement and layered annotation on sealed derivatives.

Capture sessions linked to exhibits — visible, IR and UV passes recorded with instrument settings
Deep-zoom tiled imagery with sub-100 ms interaction targets; calibrated measurement and scale bars
Layered annotations on sealed derivatives; figure snapshots carry microcaptions automatically

WBS

Comparison bench

Synchronised side-by-side examination of exhibits with linked pan-zoom, overlays and transparency modes for feature-level comparison.

Linked pan-zoom keeps both exhibits registered while you move — compare stroke by stroke
Overlay, blink and transparency modes for feature-level agreement checks
Comparison notes bound to marked regions on both sides, ready for the report

SIG

Signature bench

Genuine-versus-questioned signature grids with stroke, fluency and proportion analysis, and exemplar management per subject.

Genuine-versus-questioned grids with exemplar management per subject and admitted standards
Stroke order, fluency, pressure and proportion analysis recorded as tagged features
Statistical support with calibrated likelihood-ratio methods — Cllr and validation set disclosed with every run

HWR

Handwriting bench

Characteristic charts, letterform comparison and writer-profile worksheets built from tagged features across exhibits.

Characteristic charts and letterform comparison built from tagged features across exhibits
Writer-corpus management — supervised dictation and course-of-business collections, with script coverage flags
Model-assisted comparison with error rates linked and scope limits declared per script

PDF

Digital documents

Metadata, incremental updates, object streams, revision history and signature validation for born-digital and scanned PDFs.

Metadata, incremental updates and object-stream parsing reveal how a file was assembled
Revision history reconstruction — see the document before and after each saved change
Digital-signature validation with post-signature change flags surfaced on the case record

Workbenches on screen

The bench, as the examiner sees it.

Every workbench works on sealed derivatives, keeps exhibit identity in the chrome, and records method, version and parameters with each result.

WBI-12-T3 Image workbench — layers, calibrated measurement and band arithmetic on a deep-zoom canvas.

SIG-14-T3 Signature comparison — aligned pair viewer with specimen adequacy and feature grid.

HWR-15-T3 Handwriting / writer ID — verification and investigative modes with declared script scope.

PDF-16-T2 PDF / Office forensics — incremental-update timeline and post-signature change flags.

MTH-17-T2 Method runner — provenance record: inputs, parameters, versions and output hashes per run.

Method governance

Analytical methods are governed like evidence.

Versioned methods

Every analytical method ships as a versioned release with public release notes — reports cite the exact version used.

[VG] / [RG] grading

Validation and reliability grades travel with methods and their results across every screen and into the report.

Local execution

Methods run inside the tenant — local-compute-only policy means evidence never leaves the laboratory to be analysed.

Hash-stamped runs

Each run produces a manifest — inputs, parameters, outputs, hashes — sealed to the case record for reproduction.

Your evidence never leaves your building.

[ 04 ] Deployment