Souffleur is the software layer that turns a microphone in a pair of smart glasses into a business tool: it listens to the meeting, writes the record, extracts what was promised, and delivers it into the systems your customer already uses. Under your brand, stored inside the European Union.
Operated by NLFtech B.V., Netherlands · EU data residency · GDPR and CRA by design
Transcription on its own is a commodity and it is not what your customer is buying. What makes a device worth carrying is the chain that runs after the words: what was agreed, by whom, by when, and where it ends up. Souffleur supplies that whole chain as a service you call from your device.
Streaming audio over a signed WebSocket. 16 kHz mono PCM, the format every wearable codec can produce. The session survives a lost connection: the device buffers up to five minutes and resumes the same session rather than starting a new one.
Continuous transcription with a three-second overlap between chunks, so no word falls in the seam. No language is forced; a meeting that switches from Dutch to English stays intelligible.
A summary and the material points, written after the meeting rather than during it. If there is too little speech to be sure of anything, the platform returns nothing — a fabricated summary is worse than no summary.
Every concrete promise is extracted with the person who made it and the date it is due. A promise the other party made is never attributed to your user. Anything without a stated date is given a default wake-up term so it does not sink.
The record goes where the customer works: email, a signed webhook into their own systems, or a self-hosted target. Each commitment can arrive as a separate task carrying its own wake-up date.
A single control announces at the table that the device is listening, and the moment is recorded with the meeting. In Germany, recording a conversation without consent is a criminal offence; this is the feature that keeps your hardware legal there.
Most smart glasses reaching the market have solved the hard part — optics, battery, acoustics, thermals — and then ship with a companion app that does very little. That is the gap we fill. Souffleur is delivered as a platform you put your own name on: your app icon, your colours, your domain, your customer relationship. We stay behind it.
Two weeks. Your audio path against our staging platform. No contract, no cost.
Up to 100 devices under your brand, a real customer, a real evaluation period.
Per-device licence with volume tiers, a data processing agreement and a service level.
Firmware ships with the integration. We carry the platform; you carry the market.
A device with a microphone that leaves the room with a recording is, in European law, a processor of personal data — and from 11 September 2026 it is also a product with mandatory security and reporting obligations under the Cyber Resilience Act. Manufacturers outside the EU regularly discover this after the tooling is paid for. Souffleur is built the other way round: the compliance is the architecture, not a document written afterwards.
| Requirement | How the platform answers it |
|---|---|
| Data residency | Meetings, transcripts and commitments are stored on servers in the European Union. Speech recognition currently runs on OpenAI's API as a named sub-processor; for an isolated or on-premise deployment, inference is pinned to European infrastructure. |
| No training on customer data | Contractually excluded on every plan, including the free evaluation. |
| Consent evidence | Announcing that the device is listening is a first-class function, and the moment is stored with the meeting as evidence. |
| Separation between accounts | Every query filters on the signed-in account in the query itself. There is no route where an identifier from a request is enough to see a record. |
| Device revocation | Keys are stored only as a hash. A lost pair of glasses is revoked individually, without touching the account. |
| Right to erasure | Deleting a meeting removes the transcript, the summary and the commitments in one action, with no orphaned copies. |
| CRA reporting duty | Through our sister platform CRA-Portal we also supply the receiving route for vulnerability and incident reporting, and the Article 18 authorised representative service for manufacturers without an EU establishment. |
Souffleur is not a reference design waiting for a first customer. The same platform you would license runs a working end-user service: applications for iPhone, Mac and Windows, used in real meetings, with the reports and commitments arriving in real systems. It is how we find the defects before you do, and you are welcome to use it as your evaluation environment.
Native capture through the device microphone, an announcement control for the table, and the archive in the same account as the desktop clients. Available through TestFlight.
A menu-bar application that captures both the microphone and the system audio, so an online meeting is recorded from both sides.
The same, over WASAPI loopback, for the desktop estate most European companies actually run.
Prices are per month excluding VAT. The licence model for manufacturers is per active device, with volume tiers; the end-user service exists so you can evaluate the platform with real meetings before you commit to anything.
If you are building smart glasses, a wearable recorder or an audio device and you want it to arrive in Europe as a business product rather than a gadget, the technical fit costs you two weeks and nothing else.
Souffleur