A Brazilian company has been quietly working for over a decade on a project poised to become a true emotional compass: an application capable of identifying physiological and behavioral signs typical of someone lying in confrontational situations, especially regarding romantic betrayal.
With the advent of generative Artificial Intelligence and real-time behavioral analysis, the technology finally seems ready to leave the lab.
Provisionally named Veritas, the system is in its final testing phase. It combines facial recognition algorithms, voice analysis, and micro-expression reading with physiological indicators to evaluate, with high precision, the probability of someone lying when questioned about infidelity. The inspiration? Widely validated scientific studies on human behavior when lying.
The body speaks — and AI listens
When confronted about a possible betrayal, a person who is lying often displays involuntary reactions that can be detected by sensors or a phone camera. These reactions are triggered by the autonomic nervous system, primarily by the “fight or flight” response, activated when the body feels threatened — including by a truth it tries to conceal.
Among the signs analyzed by the app are:
Voice alterations
- Higher or lower vocal pitch than normal;
- Trembling voice, unusual pauses, or stuttering;
- Evasive answers or excessive, unnecessary details.
Breathing and sweating
- Accelerated and shallow breathing;
- Frequent sighs;
- Dry mouth and frequent swallowing;
- Sudden sweating, even in a cool environment.
Facial expressions and eye contact
- Avoiding or exaggerating eye contact;
- Irregular blinking frequency;
- Facial blushing or paleness;
- Pupil dilation.
Gestures and body posture
- Frequently scratching the nose, mouth, or ear;
- Restless hands, swinging legs, feet pointing towards the exit;
- Muscle stiffness, crossed arms, or excessive tension.
Speech patterns and emotional defense
- Repeating the question before answering;
- Changes in narrative when pressured;
- Disproportionate defensive or aggressive reactions;
- Vehement denial or an artificial expression of shock.
Technology based on science — and ethical limits
The application does not propose to be an “absolute lie detector,” nor does it hold legal or diagnostic value. It functions as an alert system based on patterns. The developing company emphasizes that the tool should be used as support — and never as a definitive verdict.
According to the company, behavioral psychology and forensic analysis specialists were consulted throughout the development. One of the most important principles is the concept of a baseline, meaning knowing a person’s habitual behavior to identify deviations. The same gesture that might indicate a lie in one individual could simply be a common nervous reaction in another.
Expected release
Still without an official release date, Veritas is expected to launch by the end of 2025, with versions for Android and iOS. The platform may also integrate with wearables (like smartwatches) for additional heart rate and skin temperature data collection.
Whether for curiosity, emotional support, or self-defense, the app’s proposition will spark ethical, legal, and social debates. But one thing is certain: AI has even reached the field of love — and distrust.
S&DS Editorial Staff
