About EchoDepth Events
EchoDepth Events is built by Cavefish Ltd — an emotion AI company founded in Cardiff, Wales in 2023. We help organisations understand what people genuinely feel, not just what they say.
Our Mission
The gap between what people say and what they feel is one of the most persistent problems in business. Surveys capture considered opinion after the fact, filtered through politeness, memory and the desire to give a helpful answer. Emotional response happens in the moment and is largely involuntary, which is why it is the more reliable signal and the harder one to collect. EchoDepth Events applies this to the events and exhibitions market — an industry that spends billions annually on stands, sessions and activations while measuring their effect almost entirely through badge scans and post-event surveys. It is built by Cavefish Ltd, an emotion AI company founded in Cardiff, Wales in September 2023 and registered in England and Wales, whose work spans emotion measurement across research, insight and live events. Analysis happens at the edge on a processing unit deployed at the venue, and raw video frames are discarded immediately.
EchoDepth Events applies this to the events and exhibitions market — an industry that spends billions annually on tradeshows, exhibitions and conferences with remarkably little objective measurement of what actually lands with audiences.
The Technology
EchoDepth is built on the Facial Action Coding System (FACS) — the gold standard for systematic facial expression analysis developed by Dr Paul Ekman and Dr Wallace Friesen in 1978. Our computer vision engine analyses all 44 FACS Action Units in real time, mapping AU activation patterns to emotional states including engagement, confusion, delight and scepticism.
Analysis happens at the edge — on a processing unit deployed at the venue — and raw video frames are discarded immediately after AU extraction. No face images, biometric data or personal information is retained or transmitted. This is not a policy choice: it is an architectural constraint that makes biometric data retention technically impossible.
The Company
Cavefish Ltd was founded in September 2023 and is registered in England and Wales (Company No. 15127122), headquartered in Cardiff, Wales. Since founding, Cavefish has completed two accelerator programmes and been recognised with 13 industry awards across AI innovation, event technology, and data privacy categories. Our work has been featured in The Daily Telegraph.
We are members of AI Wales CIC and sit on the Technology Connected Wales Data & AI Council.
Awards & Recognition
Since September 2023, EchoDepth and Cavefish have been recognised across AI innovation, event technology, privacy leadership, and startup categories:
- AI Innovation Award — Welsh Tech Week 2025
- Best AI Application — Fintech Awards Wales
- Emerging Tech Champion — Tech Nation Rising Stars
- Innovation Excellence — Cardiff Business Awards
- Best Event Analytics Platform — Event Tech Awards
- Innovation Award — Exhibition News Awards
- Audience Measurement Innovation — ESSA Awards
- Privacy Innovation Award — Data Protection Excellence
- GDPR Excellence — ICO Innovation Programme
- Startup of the Year — Welsh Startup Awards
- Top 50 AI Startups UK — BusinessCloud
- Accelerator Graduate — NatWest Accelerator
- Accelerator Graduate — Alacrity Foundation
EchoDepth Product Family
EchoDepth Events is one of several vertical products built on the EchoDepth platform:
- EchoDepth Insight — employee sentiment and engagement analytics
- EchoDepth Sales — sales coaching and conversation effectiveness
- EchoDepth Sports — athlete and coach performance analytics
- EchoDepth Fintec — FCA vulnerability detection and compliance
- EchoDefence — applied emotion intelligence for defence contexts
All products share the same 44-AU FACS engine and privacy-by-design architecture, developed in partnership with Logic Software (Cardiff, ISO 9001, Cyber Essentials certified).
