Lie Detection or Truth Validation with EyeDetect

Inside Lie Detection using EyeDetect with Simon Henson

Titan PI TV is back with another behind-the-scenes look at the realities of private investigations in the UK — and in the latest episode, Managing Director and host Simon Henson turns the spotlight on a topic that attracts plenty of curiosity (and not a little controversy): lie detection, or “truth validation”, using EyeDetect.

Broadcast as a short, practical explainer, the episode walks viewers through what EyeDetect is, where it came from, how Titan uses it, what it can and can’t do, and the real-world scenarios in which clients request it. It is also a reminder of Titan’s national footprint — headquartered in Derby, with 10 offices across England, offering coverage “from Truro in the south-west up to Manchester in the north-west”.

For those who follow Titan PI TV as part of their wider interest in investigative work — or for anyone considering truth validation as an option — this episode serves as a clear, client-focused guide to the process.

What is EyeDetect?

In the episode, Simon explains that EyeDetect was introduced and developed in the United States by Converus, with rollout beginning in the US on 8 April 2014, before arriving in the UK in 2017.

Rather than relying on the classic image of a lie detector — wires, sensors, and physiological readings — EyeDetect is presented as a tool that measures minute changes in the eyes, specifically pupil reactions, using highly sensitive cameras built into a terminal that resembles a standard computer monitor.

The core principle, as described in the episode, is straightforward: when people tell the truth or lie, their bodies respond differently — and EyeDetect aims to detect those differences by analysing subtle ocular changes under controlled conditions.

How Titan uses truth validation in investigations

Simon positions EyeDetect not as a novelty, but as an investigative service that can support decision-making in two broad areas:

• Matrimonial and infidelity investigations
• Corporate investigations, including internal theft inquiries

In corporate contexts, Simon offers a typical scenario: a business experiences a theft or burglary that appears to be “an inside job”. Multiple individuals may need to be asked structured questions to establish whether anyone benefited, was involved, or provided information connected to the incident.

In private client work, particularly where relationships are under strain, the episode notes that questions often centre on fidelity. Simon describes two common relationship-focused questions that appear frequently in these cases, with the option of adding a third depending on the circumstances.

Importantly, the episode frames the service as a way to address specific “points to prove” — rather than a general fishing expedition. It is designed for targeted issues where clarity is needed and all parties are prepared to engage with a structured test.

The three-question rule — and why it matters

One of the most practical takeaways from the episode is a rule that often surprises first-time clients: an EyeDetect test covers a maximum of three questions.

Simon repeats the limitation clearly: if a client wants more than three questions, that does not mean the examiner simply adds them on — it means another test would be required.

This constraint influences everything: the client consultation, how Titan plans the session, and why the wording of questions becomes so crucial. The episode repeatedly emphasises that question planning is not a box-ticking exercise; it is central to producing a meaningful result.

Cost and logistics: pricing, location, and travel

The episode also lays out the commercial details in plain terms. According to Simon, EyeDetect tests through Titan are priced at:

• £480 including VAT (equivalent to £400 + VAT)
• Tests are delivered from Titan’s Derby office
• If Titan travels to the client, mileage is charged at 45 pence per mile (return journey)

For many viewers, this transparency is useful: it sets expectations early and avoids the “hidden cost” feeling that can accompany specialist services. It also reflects the reality that this is not an off-the-shelf product — the test must be planned, written, licensed, and delivered professionally.

Accuracy: official figures and Titan’s view

Accuracy is always the headline issue in any lie detection discussion, and Simon addresses it directly.

He states that EyeDetect is officially 86–88% accurate, while also offering his own view based on personal experience, saying he considers it “100%” because he has repeatedly tried (unsuccessfully) to beat it using a simple exercise: choosing a number between 1 and 10, lying about it, and seeing whether the system detects the deception.

While viewers will form their own opinions on that claim, the episode’s key practical point is the official rate — and what happens when EyeDetect is used alongside another method.

Simon adds that when EyeDetect and polygraph are used together, the official accuracy increases to around 98–99%. He also notes a key operational difference:

• EyeDetect takes around 30 minutes
• Polygraph takes a minimum of around 1 hour 45 minutes

In other words, EyeDetect is presented as a faster option — with the potential to be paired with polygraph for even higher stated accuracy.

Who can take the test — and what “willing” really means

A significant part of the episode is devoted to suitability and consent. Simon is clear on eligibility requirements:

• The subject must be willing to take the test
• Titan cannot force anyone to participate
• The subject must be over 16
• The subject must be able to read

That last point is not arbitrary, and Simon explains why when he describes the test format: the subject must read statements on-screen and respond accordingly.

In practice, willingness is not just a courtesy — it is foundational to how the service works. EyeDetect, as presented in the episode, is not a coercive technique; it is a structured process that requires cooperation, comprehension, and consent.

How the EyeDetect process works at Titan

For viewers who want the mechanics, this is where the episode becomes particularly informative.

Simon breaks the process down into phases:

1. Initial client meeting and planning
   Titan sits down with the client to establish the “points to prove” and to plan up to three questions for the test. The client does not have to use all three; they can choose one or two. But the maximum remains three per test.
2. Test writing by a specialist
   Once the questions are agreed, Titan approaches a test writer, who prepares the test in the required format.
3. Upload and setup on the EyeDetect terminal
   The test is uploaded to the EyeDetect terminal — described as a monitor equipped with very sensitive cameras that can measure the smallest changes in the eyes and pupils when the subject is correctly positioned.
4. Controlled questions: teaching the system your responses
   A notable detail from the episode is that, during the session, the subject is asked at points to lie and at points to tell the truth. These are described as controlled questions, enabling the software to learn how the subject’s eyes respond under both conditions.
5. Statements, not questions: “true” or “false” answers
   When it comes to the key issues being tested, Simon explains that the system converts the planned questions into statements. The subject responds using a mouse by selecting true or false.
6. Timing rules and the role of headphones
   Once the test begins, it cannot be paused mid-flow. Simon says the subject cannot decide to “have a break during the test”, although there are points where rest breaks occur.
   Subjects also wear headphones: the statements are read aloud, and the subject cannot proceed until the full statement has been played. Simon explains this is because the test must take a certain amount of time to maintain consistency.
7. Instant results
   As with polygraph, Simon states the results are instant, a feature likely to appeal to clients seeking prompt clarity.

Why Titan cautions against rushing

One of the most client-relevant sections of the episode is not about technology, but about process discipline.

Simon notes that private clients, particularly those in relationship situations, often want the test “the same day”. Titan may be able to accommodate in some cases, but he strongly cautions against rushing question design. If the questions are rushed or drafted poorly, the test may not deliver what the client needs — and, in his words, the client may simply be wasting their money.

The message is clear: the value of truth validation depends heavily on careful preparation. The goal is not speed; it is a properly structured test that addresses the real issue.

Payment and booking: why funds are taken upfront

Finally, Simon explains Titan’s booking and payment structure.

Payment is required when the client asks Titan to write the test, because Titan must:

• purchase a licence, and
• pay the examiner/test writer to prepare it

Once the client confirms they wish to proceed, Titan requests payment of the £400 + VAT to the business bank account, and then schedules either an appointment at Derby or a visit to the client’s location (with mileage charges as noted).

Where to find more information — and what Titan wants viewers to do next

As the episode wraps, Simon directs viewers to Titan’s website for service details, including EyeDetect and lie detector information, via the Services section. He also reminds listeners that Titan PI TV is available as a podcast for those who prefer audio.

The closing call-to-action is classic YouTube: like the video, subscribe to the channel (it is free), and “stay safe” until the next episode.

For a short instalment, this week’s Titan PI TV packs in a substantial amount of operational detail — the sort of clarity clients often want before making contact. And in a field where rumour and misconception spread quickly, an episode that calmly explains what a service is, how it works, and what it costs is likely to be welcomed by both private and corporate audiences.

What’s Next on Titan PI TV?

Titan PI TV continues to grow steadily, with over 3,000 subscribers and counting—a testament to the appetite for straight-talking guidance in a complex field. If you found Simon Henson’s insights useful, subscribe to the channel to catch future episodes. New content drops every Friday at 3:00 pm, offering grounded advice for investigators, agency owners, and professionals who work with them.

Thank you for reading, watching, or listening to this week’s blog post on Titan PI TV. For more expert advice and behind-the-scenes insights, subscribe to Titan PI TV on YouTube or download the Titan PI TV podcast wherever you get your podcasts. If you found this information helpful, please give us a thumbs up and subscribe to our channel. Stay tuned for more insights into the world of private investigations. Until next time, stay safe and keep learning!

Titan PI TV: Uncovering the Truth, One Investigation at a Time.