When Disaster Strikes
Earthquake, typhoon, battlefield — when the network goes down, xGrid is the last line of defense.
Network Down
Earthquake collapses cell towers. Typhoon cuts fiber lines. Cloud services become unreachable — but patients still need care.
Equipment Damaged
Flooding, lightning, shelling — when equipment is damaged and data becomes inaccessible, you need a system that already lives on every device.
Field Operations
Remote disaster sites, mobile clinics, forward operating bases — no stable network, but nurses can run the full patient workflow from a phone.
De Novo xGrid: Built for the Worst
An offline-first medical platform on a credit-card-sized Raspberry Pi. Nurses operate the full patient workflow from their phones — registration, triage, surgery, transfusion, discharge billing. Sync when connected, operate independently when not.
Built for Real Disasters
Designed with input from emergency responders and medical professionals
Walkaway Test
If the dev team dissolves and servers shut down, can the system keep running? We validate with 5 tests.
Lifeboat Protocol
When the hub fails, edge devices can rebuild the system.
Like a starfish regenerating a limb, every De Novo xGrid edge device can rebuild the central brain.
When designing a system, assume you'll be hit by a bus tomorrow. Can your users continue without you? This is our standard for every line of code.
149-Step Automated Test — 10 Patient Scenarios
The most demanding test: 3 of 8 medical stations forced to evacuate simultaneously — with active blood transfusions and an ongoing surgery. The system ensured every patient record, blood bag, and medication transfer was tracked and verified, without interrupting care.
Validated on Raspberry Pi 5 · 20 concurrent stations · zero errors
View Full Report →Core Operations
Three scenarios for high flexibility and resilience
Local Kernel
A local server lets every phone in the station share the same data
The SDK solves coordination across PWAs on a single device. But when a station has five nurses, three doctors, and two logistics operators working from different phones at once, who keeps everyone's view of the patient consistent? The Kernel does — a credit-card-sized Raspberry Pi running as a local server in each station. All phones connect to it over the station's Wi-Fi, no external internet required, and every PWA shares the same data in real time.
SDK — Same-Device Coordination
Shared code library that gives every PWA on one device real-time cross-tab sync
Kernel — Same-Station Coordination
Local Raspberry Pi lets multiple devices in one station share a single source of patient data
Mesh — Cross-Station Coordination
Hub-Spoke topology lets stations back each other up and rebuild after disaster
Community Grid
CIRS EngineCommand center for community resilience. Orchestrate shelter operations, coordinate volunteer dispatch, delivery tracking (offline ledger + contract pricing)—all offline.
Medical Grid
MIRS EngineCritical medical data, even offline. Complete patient records, real-time triage classification, medication inventory tracking.
xGrid READY
Making resilience part of everyday life. Free offline-first supply management app for families.
Built for Every Role
From field medics to command center operators, De Novo xGrid adapts to your workflow.
Clinical Ops
Seamless patient handoff from field to hospital. Offline triage, prescriptions, and medical records.
Logistics Ops
Real-time inventory visibility across all nodes. Track supplies, medications, and equipment status.
What is a PWA?
A website that installs like an app. No app store needed — just visit and add to your home screen.
How Does It Work?
PWAs cache everything locally. Once installed, the app runs from your device, even without internet.
Why Does It Matter?
In disasters, networks fail first. PWAs keep working when you need them most — offline, reliable, instant.
Event Bus
Real-time cross-tab synchronization. When a nurse updates a patient status, doctors see it instantly.
Unified API
Standardized communication protocol with automatic retry, timeout handling, and error recovery.
Offline Queue
Operations continue seamlessly without internet. Data syncs automatically when connection returns.
Started November 2025, built a complete resilience ecosystem in 3 months
Kernel (本地伺服器)
Unlocked: Raspberry Pi local server in every station — the Kernel. All station phones connect via station Wi-Fi, PWAs share a single source of data. SDK, Mesh, and the full xGrid platform are all built on this foundation.
MIRS v2.0
Unlocked: Offline-first anesthesia records, equipment tracking, blood bank
HIRS + CIRS
Unlocked: Home preparedness + community shelter management
PWA Fleet
Unlocked: 15+ role-specific PWA interfaces
De Novo xGrid SDK
Unlocked: Unified offline queue, Event Bus standardization
Walkaway Test
Unlocked: Data sovereignty validation passed
Lifeboat Protocol
Unlocked: Edge devices can rebuild central hub
De Novo xGrid™
Unlocked: Medical appliance, bus factor approaching infinity
Medical Grid v5.1
Unlocked: 136-step E2E test: 135 pass, 0 fail, 0 gap. Station consolidation validated.
Medical Grid v6.0
Unlocked: LSCO battlefield medicine: 8 modules complete. 149-step E2E across 10 scenarios.
Medical Grid v6.5
Unlocked: 173-step E2E: 172 pass, 0 fail. CIRS Walkaway DR, Cross-Proxy API, idempotent sync, LSCO walkaway coverage verified 17/17.
Medical Grid v7.14
Unlocked: 649-step E2E across 6 suites. LSCO Readiness 4/4 complete: Sync 11P + DR 12P + Merge 13P + 72H 364P. 100% pass rate.