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Deception Detection UK / P300 EEG

Deception Detection UK:
brainwave verification.

Deception Detection UK logo

Deception Detection UK, built and run by DadLink Technologies, is a P300 EEG-based concealed information test. We measure the involuntary recognition response your brain produces when it encounters specific details — a written finding for HR, family and personal situations where a specific question needs a specific answer.

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P300 EEG-based protocol
60—90 Minutes per session
UK + Intl In-person testing
Recognition response P300 EEG response visualisation
01 / The Method

Recognition.
Measured.

P300 is a well-documented brain response that occurs roughly 300 milliseconds after a person sees or hears something they recognise. It's involuntary, hard to suppress, and doesn't depend on whether the subject chooses to answer truthfully — only whether the information itself is familiar.

  • A real, well-studied signal. The P300 has been documented in the EEG literature since the 1960s and is one of the most reliably measurable event-related potentials.
  • Recognition, not "lying". The test detects whether the brain recognises specific information — it doesn't claim to detect dishonesty in the abstract.
  • Involuntary. The response happens within a fraction of a second, before conscious choice, so nervousness does not by itself create it. Countermeasure resistance depends on the protocol used, which is why ours is designed around it.
  • Not a polygraph. P300 is brain-based and recognition-driven. Polygraphs measure peripheral arousal (heart rate, skin conductance). Different mechanism, different methodology, different scientific basis.
  • BrainBit 4-channel EEG. A compact research-grade headset — comfortable, non-invasive, no needles, fitted in minutes.
P300 · Since 1960s Not polygraph BrainBit EEG
BAD scoring Bootstrapped amplitude difference scoring
02 / The Statistics

Bootstrapped
amplitude difference.

The science behind the verdict. We compare the brain's response to known relevant items (probes) against responses to known irrelevant items, using bootstrapped amplitude difference scoring — a statistical technique that produces a per-probe verdict with quantified confidence rather than a binary opinion.

  • Probe items. Specific details only someone with knowledge of the matter would recognise.
  • Irrelevant items. Carefully matched control items the subject would not be expected to recognise.
  • Target items. Known controls the subject is briefed on, used to verify they're attending to the test.
  • BAD scoring. Bootstrap-resampled amplitude differences between conditions — a statistical method, not a clinician's gut call.
  • Per-probe verdicts. Each probe is judged on its own merits. The test doesn't return a single "passed/failed".
  • Quantified confidence. Every verdict carries a statistical confidence interval — you see the strength of the evidence, not just the conclusion.
Per-probe verdicts Bootstrap statistics Confidence intervals
Honest about limits Where P300 testing applies
03 / The Scope

What the test
can, and can't, do.

P300 testing is suited to certain kinds of questions and unsuited to others. Being honest about both is part of the service — and part of why the test produces useful evidence when it's the right tool, instead of guesswork when it isn't.

  • Suitable for. Specific factual questions where the subject either does or doesn't recognise a detail — a name, a location, a sequence of events, an object, a transaction.
  • Unsuitable for. Open-ended questions about feelings, intentions, interpretations, or general truthfulness. The test answers "do you recognise X?", not "are you a trustworthy person?".
  • Used in. Civil disputes, custody discussions, internal HR investigations, criminal defence preparation, due diligence on high-trust appointments, personal questions where evidence helps.
  • Not currently admissible. P300 results are not currently admissible as evidence in UK criminal courts. Some civil and HR contexts use them as supporting evidence; check with your legal advisor before relying on results in any formal proceeding.
  • Always voluntary. Every test requires explicit informed consent from the subject. We will not test anyone who has not freely agreed to the protocol.
  • Not a substitute for criminal investigation, formal court proceedings, or polygraph testing — we are not polygraph operators and don't claim to be.
Voluntary consent Scope-aware Legal advisable
UK · International Test locations and reporting
04 / The Process

Tested in person.
Reported in writing.

Tests are conducted face-to-face by a trained operator at a fixed location — never remote. Locations across the UK and internationally in Ireland, the UAE, Switzerland, Canada, Singapore, and Hong Kong, with new sites added as demand grows.

  • Pre-test consultation. Free conversation to confirm the matter is suited to a P300 protocol and to shape the probe items with the operator.
  • Online booking, Stripe payment. Transparent pricing, no hidden charges, payment via card.
  • 60-90 minute session. Equipment fitting, baseline calibration, the test itself, and a debrief.
  • Trained operator throughout. Tests are conducted in person by a trained operator — never automated, never remote.
  • Written report. Per-probe verdicts with confidence intervals, methodology notes, and a plain-English summary.
  • Follow-up call. Discuss results with the operator. Bring questions, bring your legal advisor if relevant.
UK · Ireland · UAE · Switzerland Canada · Singapore · Hong Kong Stripe payments
P300
Brain response, since 1960s
60—90
Minutes per session
7
Countries currently served
UK
Field-tested across cities
Important. P300 testing detects recognition of specific information; it does not detect "lying" in the abstract sense, and is not a polygraph. Tests require voluntary, informed consent from the subject. Findings are statistical and probabilistic, not absolute. P300 results are not currently admissible as evidence in UK criminal courts; admissibility in civil and other proceedings varies — please consult your legal advisor before relying on results in any formal context. Test results should not be used as the sole basis for life-altering decisions.
Clients

What clients say.

Questions

Frequently asked.

Specific questions, specific evidence

Specific question.
Specific answer.

Book a free pre-test consultation. We'll talk through the matter, what a P300 protocol can and can't tell you, and whether your situation is suited to scientific testing — or whether a different kind of evidence would serve you better.

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