Hear Threats. Protect Access. Offline.
Cloud-standard security features —
now running fully offline on microcontrollers.
now running fully offline on microcontrollers.
SoundGuard — IP block (critical sound detection)
- Detects gunshots, screams, crashes, alarms, glass break.
- Tunable for different environments, noise levels, and device acoustics.
VoicePIN — IP block (offline numeric PIN)
- Recognizes spoken numeric PINs fully offline.
- Configurable phrase set and PIN length; robust in noisy conditions.
Customization Options
- Add new sound classes (industrial alarms, tamper events, sirens).
- Adjust thresholds to balance false alarms vs. recall.
- Adapt VoicePIN to different languages and grammars.
- Optimize for latency, accuracy, and energy on your platform.
Platforms We Support
- ESP32 (incl. ESP32-S3) → fast PoC and cost-sensitive devices.
- Arm® Cortex™-M + Arm® Ethos™-U55 / other AI SoCs → optimized for performance and ultra-low power.
- Migration path: start on ESP32 → battery-powered reference module.
Applications
Smart City & Infrastructure
detect critical events like gunshots, alarms, or crashes in real time
Industrial Safety
monitor shop floors for incidents, alarms, and accidents
Access Control
enable offline numeric PIN as a frictionless factor for gates, doors, or devices
OEM Benefits
- Lower OPEX — fewer false alarms, fewer manual interventions, lower service costs.
- Safer environments — prevent incidents, reduce risks and liabilities.
- Minimal BOM impact — add offline safety and access with negligible cost.
- Compliance simplified — privacy-first, offline design passes legal and regulatory checks.
- Pro SKU differentiation — security features create premium product lines.
DIY

VoicePIN
offline numeric PIN, secure access control built on ASR + Intent. Part of the VoxControl Kit

SoundGuard mini
lightweight demo of critical sound detection

Gate — Offline License Plate Recognition Gate Opener (Hackster)
shows vision + security combined
For OEMs, these demos are proofs that offline security features are ready, tested, and scalable for real-world products.
How We Work
Evaluate
Pilot (PoC)
License & Integrate
- Evaluate — define target use case, environment, and hardware.
- PoC — 2–3 weeks, fixed scope, measurable detection metrics.
- License & Integrate — adapt IP to production; PoC fee credited.
Deliverables
- SoundGuard and VoicePIN IP binaries + config tools.
- APIs and headers for integration.
- Test datasets and profiler traces.
- Metrics pack (latency, accuracy, false alarms, energy).
- Demo video on your board.
Licensing
- PoC license — quick validation.
- Project license — tuned models + integration support.
- Volume license — mass deployment, flexible terms.
No lock-in: portable IP, stable APIs, OEM retains integration code.
Ready to add always-on edge security to your devices?
Start with SoundGuard and VoicePIN — proven offline security features for OEM products.