27 lines
1.9 KiB
Markdown
27 lines
1.9 KiB
Markdown
# Device Tools
|
|
|
|
A local browser capability and privacy lab. It shows useful platform evidence without producing a device identifier, fingerprint hash or uniqueness score.
|
|
|
|
## Features
|
|
|
|
- Passive inventory for secure/top-level context, display/viewport/DPR, touch/pointer/hover, accessibility media queries, media constraints, codec declarations, storage/PWA and browser device-API presence.
|
|
- Explicit individual probes for permission state, storage estimate/persistence, WebGL limits, WebGPU adapter presence, media-device counts, battery, network hints and camera/microphone/screen access.
|
|
- Camera, microphone and screen streams are never recorded and every returned track stops immediately.
|
|
- WebGL deliberately avoids unmasked vendor/renderer extensions; media device IDs and labels are discarded.
|
|
- Deterministic redacted JSON/CSV reports with broad buckets for high-entropy values and no timestamp, user agent, locale, identifier or score.
|
|
- Responsive accessible interface, system/light/dark Toolbox shell and offline PWA.
|
|
|
|
## Privacy boundary
|
|
|
|
The passive inventory runs locally on load and does not request permission. Optional probes run only after their named button is pressed; buttons labelled “may prompt” can show browser or operating-system UI. The application performs no canvas/audio sample fingerprinting, persistent storage, telemetry or external request.
|
|
|
|
Downloaded reports are deliberately less precise than the on-screen local view. They bucket exact dimensions, pixel ratio, storage, graphics limits, hardware counts, battery timing and connection quality. This is a diagnostics report, not proof that an API will work in every embedded or enterprise-policy context.
|
|
|
|
## Development
|
|
|
|
Use Node.js 22+ and npm 11. Run `npm ci`, `npm run check`, `npm run test:browser`, then `npm run package:release -- --force`. The deterministic artifact is `release/device-tools-0.1.0.zip` with a SHA-256 sidecar.
|
|
|
|
## Licence
|
|
|
|
GPL-3.0-or-later.
|