Package 01 — The Cure

The vestibular mismatch ends at the OS layer.

Standard XR apps fail because visually induced motion sickness arises from visual–vestibular interaction conflicts. Northstar MR is a foundational, hardware-agnostic OS layer using asynchronous Z-buffer injection to eliminate cybersickness natively.

— or click the ✦ in our mark
Northstar MR — gold star anchored above a luminous blue grid wormhole
The Human Interface Roadmap

Four modules. One foundation.

The Cure stabilises the body. The next three layers extend Northstar into a continuous human-machine interface.

01
Package 01
The Cure
Shipping · v1.0

Native OS-level vestibular synchronization to eliminate cybersickness via asynchronous Z-buffer injection.

02
Package 02
Biometric
Available Q3

Proactive physiological monitoring and dynamic environment adjustment.

03
Package 03
Cognitive
2026

Harmonized spatial interaction for optimal cognitive load management.

04
Package 04
The Bridge
Research

The complete, hardware-agnostic OS layer for physical and haptic human-machine anchoring.

< 4ms
Vestibular delta
Below perceptual threshold
99.7%
Sync rate
Engine ↔ Northstar
−87%
Sickness incidence
vs. unmodified runtime
OS-level
Integration
No SDK, no app rewrite
The Science

Why every standard XR app makes you sick.

Cybersickness is not a content problem. It is a sensory conflict: your inner ear reports stillness while your retina reports motion. The lag between head pose and rendered photon—motion-to-photon latency—amplifies the mismatch above the vestibular threshold of roughly 20 ms.

Engine-side mitigations (foveated rendering, reprojection, comfort vignettes) operate after the frame is composed. They cannot correct the underlying pose-to-depth desynchronisation. Northstar intercepts at the depth buffer—before composition, after pose— and re-warps geometry against a 1000 Hz pose stream.

Failure modes — app layer
Reprojection / ATW
Corrects pose, not depth. 2D warp on a 3D mismatch.
Comfort vignettes
Hides peripheral motion. Vestibular signal unchanged.
Locomotion redesign
Trades immersion for stability. Not a fix, a workaround.
Engine-side latency tuning
Bound by render pipeline. Floor ≈ 20 ms.
Northstar — OS layer
Asynchronous Z-buffer injection
Re-warps depth against live pose at 1 kHz. Vestibular delta < 4 ms. Deterministic.
Package 01 · The Cure

Asynchronous Z-buffer injection.

The first mixed-reality runtime that treats vestibular alignment as a kernel primitive—not an application concern.

Kernel-level intercept
Hooks the compositor below the engine. Zero application changes required.
1 kHz pose stream
Dedicated IMU pipeline bypasses USB/Bluetooth jitter.
Deterministic output
Bounded vestibular delta with formal verification.
Telemetry by default
Per-session sync rate, dropped-pose count, M2P histogram.
Pilot Program

Request Northstar MR Pilot Access

Our OS-level integration is currently available for select enterprise partners and system integrators to establish LOI and Pilot agreements.

NDA on request
Reference hardware available
Architecture briefing within 5 days

Opens your mail client · studyofdirections@gmail.com

northstar://kernel/zbuffer.sync
[NSMR] kernel boot ............................. ok
[NSMR] HMD pose stream ......................... 1000 Hz
[NSMR] async z-buffer injection ................ ARMED
[NSMR] vestibular delta ........................ 1.7 ms  ✓ < 4 ms
[NSMR] motion-to-photon (engine) ............... 28 ms
[NSMR] motion-to-photon (corrected) ............ 6 ms
[NSMR] cybersickness probability ............... 0.04
[NSMR] sync rate ............................... 99.7 %