Portal Development Kit (PDK): this is a development kit.

Uses · Immersive

When the eyes and
the inner ear agree.

Immersive media has a physiological problem: the brain notices when the motion the eyes see and the motion the inner ear feels do not match. Adding a motion platform can fix that. It can also make it worse, and which one you get is mostly a question of timing. The Portal Development Kit (PDK) is a development kit built around that timing, for developers, integrators and research partners.

Development Kit: early-access hardware, software in active development.

Supplied for development and evaluation use (Terms, Section 8.1). A paid public ride is an amusement device where local law says so — licensing, inspection, insurance, operator training — and the Terms do not cover those duties (Section 8.2).

A timeline comparing the arrival of a visual cue and a vestibular cue, and the window within which the brain treats them as one event.

The timing question

A motion platform can
reduce discomfort
or cause it.

When the visual and vestibular signals arrive close enough together, they fuse into one percept and you simply feel that you are moving. When they arrive far enough apart, they stay two signals that disagree, and the disagreement is what people describe as discomfort.


Where it fits

Three places motion earns its footprint.

Venues

VR arcades and free-roam sites. Riders are 18 and over. 1.00 × 1.00 m per rig for the PDK platform, 1.57 m in diameter with the extension feet. Venue use needs a Commercial Operator Agreement (Section 8.4).

Simulation development

Scenario work, with motion scripted alongside the visual content rather than bolted on afterwards.

Research

Visuo-vestibular conflict paradigms, vection, and mismatch tolerance, with per-axis specifications published on /technology/.

Your engine, your motion logic

No SDK to adopt.

Immersive work is built on Unity, Unreal, OpenXR runtimes and bespoke engines. The platform does not ask you to add another layer to that stack.

Runtime-agnostic

The platform takes six-axis pose commands over UDP from the engine or runtime you choose; that integration is your work.

HMD-agnostic

The platform has no opinion about your headset. It receives a pose; what is rendering the scene is your business.

For venue operators

Commercial operation needs a Commercial Operator Agreement (Terms, Section 8), not available yet — register interest.

Static rig and user weight is carried pneumatically rather than by the motors, so the motors move the rider rather than hold the load.

Keep reading

Latency

Which two points, measured how — the page this one depends on.

Entertainment

The same platform where throughput and uptime decide the economics.

Talk to us

For a question a page cannot answer.