01
One browser renderer
roHtmlWidget launches player.canvasrelay.app full-screen. BrightSign integration supplies host operations and telemetry rather than duplicating scene/widget rendering.
Player · BrightSign developer host
Commercial signage hardware, without another renderer.
Canvas Relay wraps its existing browser player in a thin BrightSign autorun host. The package, telemetry bridge, capture path and B-Deploy-style workflow are testable now; production support remains model-and-BOS hardware-QA gated.
Cloud basedAccess anywhere
Design onceUpdate in real time
Relay everywhereAny screen, any size
Reliable & secureOffline playback built in
Host architecture
A thin BrightSign host around the browser player.
The package and host bridge are implemented. Production support remains gated by a recorded playback, recovery, capture, and reboot pass for the exact model and BOS release.brightsign
Model and BOS QA required01
Build autorun package
NO TENANT SECRETDeterministic zip and SHA-256 manifest
02
Provision device
PACKAGESD/USB root or controlled B-Deploy package
03
Launch roHtmlWidget
CHROMIUMFull-screen Canvas Relay browser renderer
04
Bridge fleet operations
BSMESSAGEPORTTelemetry, requested capture, reload, diagnostics
OUTPUTAssigned Canvas Relay board
Developer package · hardware QA required
Developer package and structural validation are available. No BrightSign model or BOS release is labeled production-supported until physical-device QA records a pass.
What the BrightSign host provides
02
Deterministic autorun output
The build creates a stable autorun package plus SHA-256 manifest with normalized file order and timestamps for controlled distribution.
03
B-Deploy-ready provisioning
Use SD installation or register the generated autorun package in a controlled B-Deploy workflow. Runtime pairing creates the unique device credential; package files contain no tenant secrets.
04
Fleet hardware telemetry
The bridge reports BrightSign model, BOS version, serial-derived platform identity, boot/uptime and explicit remote-operation capabilities to Fleet Health.
05
Actual capture is explicit
Supported hosts capture through roVideoMode only after an operator request, then upload bounded image bytes to private R2-backed device storage.
06
Safe recovery and updates
Persistent Chromium storage, network recovery, package checksums and BrightSign recovery/B-Deploy conventions support controlled unattended rollout without enabling inspectors or insecure HTTPS.
Keep exploring
Browser player
Review the renderer and offline release behavior hosted by BrightSign Chromium.
Read more →Raspberry Pi appliance
Compare the reproducible Pi kiosk path for deployments that do not require BrightSign hardware.
Read more →Fleet Health
See health scoring, remote actions, history and actual-versus-expected capture truth.
Read more →Questions, answered
01Does Canvas Relay use a separate BrightSign renderer?+
No. The native host launches the existing hardened browser-class player in BrightSign's documented roHtmlWidget Chromium environment. Scenes and widgets keep the same browser rendering path.
02Which BrightSign models and BOS versions are supported?+
The package targets current roHtmlWidget-capable hardware, but Canvas Relay does not claim a production model/BOS pass until that exact combination is exercised on physical hardware and added to the compatibility matrix.
03Can operators capture the actual display?+
The host implements BrightSign's documented roVideoMode screenshot path and uploads only in response to a short-lived, tenant-scoped Canvas Relay capture request. A server-rendered expected preview remains clearly separate.
04Does the package contain my Canvas Relay secret?+
No. The deterministic autorun package contains only public player configuration. The device establishes its unique Canvas Relay identity through the normal on-screen pairing flow after provisioning.
Validate the exact hardware before rollout.
Build the package, provision a QA player, pair it normally and record playback, recovery, capture and reboot results by model and BOS version.
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