What if the way you breathe could identify you as accurately as some familiar biometric technologies?
Most people associate biometric identification with fingerprints, facial recognition, or iris scanning. But scientists have discovered that something as ordinary as breathing may also contain information that distinguishes one person from another.
A revolutionary study published in Current Biology in June 2025 showed that patterns of nasal airflow could identify individuals with 96.8% accuracy in a study of 97 participants.
Even more surprisingly, the researchers found associations between breathing patterns and several physical and psychological characteristics, including body mass index (BMI), anxiety, and depression-related measures.
The data show that breathing may be more than a mechanism for exchanging oxygen and carbon dioxide. It may also provide a measurable reflection of the brain processes that regulate respiration.
However, this discovery does not mean that breathing can already replace fingerprints or diagnose mental health conditions.
As of November 2026, respiratory fingerprints remain an emerging research concept, with important questions about accuracy, clinical reliability, privacy, and feasible implementation.
Here is what scientists have discovered and what is still unclear.
- A peer-reviewed 2025 study found that nasal breathing patterns can identify individuals with 96.8% accuracy in a research cohort of 97 participants.
- Researchers measured airflow separately through each nostril using a specially developed wearable device.
- Breathing patterns showed associations with characteristics such as BMI, anxiety, depression-related measures, and behavioural tendencies.
- Some individual respiratory characteristics remained recognisable when participants were tested again after extended intervals.
- Breathing biometrics could eventually contribute to identity verification and personalised health monitoring.
- The technology hasn’t yet been clinically validated for diagnosing psychiatric conditions or a proven replacement for established biometric authentication systems.
What Are Breathing Biometrics?
Biometrics refers to measuring biological or behavioural characteristics that can help identify an individual.
Common examples include fingerprints, facial geometry, iris patterns, and voice characteristics.
Breathing biometrics applies a similar concept to respiration.
Instead of examining a fingerprint or facial features, researchers analyse characteristics of a person’s breathing, such as:
- The timing and duration of inhalation and exhalation.
- Changes in breathing frequency.
- Variability between successive breaths.
- Pauses between respiratory cycles.
- Differences in airflow through the left and right nostrils.
- Changes in breathing patterns over long durations.
A single breath is unlikely to provide a reliable personal identifier in ordinary circumstances. The research focused on patterns that become apparent through repeated measurements over time.
These patterns can reflect interactions among respiratory control networks in the brain, airway anatomy, and an individual’s physiological state.
The central question is whether these combined characteristics are sufficiently distinctive and stable to distinguish one person from another.
The 2025 data show that, under the study’s testing conditions, they can be.
The 2025 Breakthrough: Humans Have Nasal Respiratory Fingerprints
The main scientific evidence comes from a study titled “Humans have nasal respiratory fingerprints,” conducted by Timna Soroka and colleagues.
The study appeared online in Current Biology on June 12, 2025, after an earlier online publication, and was included in the journal’s July 7, 2025 issue.
Original study: Soroka et al., Current Biology (2025)
Researchers began with an intriguing hypothesis.
Because the brain controls breathing through complex neural networks, and because these networks differ between individuals, each person’s breathing pattern might also be distinctive.
To investigate, the team developed a wearable device that measures nasal airflow continuously for up to 24 hours.
How the Experiment Worked
The researchers used a device sometimes described as a nasal Holter monitor.
Soft tubes positioned beneath the nostrils enabled the device to measure airflow from each nostril separately.
Unlike conventional breathing assessments that focus primarily on respiratory rate, this system recorded detailed changes in airflow over time.
The researchers then analysed respiratory features using computational methods to determine whether these patterns identify individuals.
The study included 97 participants.
The resulting breathing profiles were distinctive enough that researchers attained approximately 96.8% recognition precision in their reported analysis.
The study also included repeat measurements, permitting researchers to examine whether respiratory characteristics persisted over time.
Some participants maintained recognisable breathing profiles across testing intervals extending from months to nearly two years.
These data provided evidence that nasal airflow contains relatively stable individual characteristics.
However, the results were obtained under research conditions using a specialised wearable sensor. They should not be interpreted as proof that an ordinary microphone, smartphone, or contactless sensor could identify anyone with the same accuracy.
Why Is Everyone’s Breathing Pattern Different?
Breathing appears simple, but it requires coordination between several systems.
The brain constantly regulates respiratory activity according to the body’s needs.
Signals from respiratory networks in the brainstem help maintain automatic breathing, while higher brain regions can alter breathing during speaking, affective reactions, voluntary breath control, and other activities.
Numerous factors may contribute to personal differences in respiration.
1. Brain Activity and Neural Regulation
Respiration is strongly influenced by neural circuits that coordinate breathing rhythms.
These networks respond to blood carbon dioxide levels, oxygen requirements, behavioural demands, and other biological signals.
Differences in neural regulation may contribute to individual patterns of breathing timing and variability.
2. Nasal Anatomy
Nasal passage structure affects how air moves through the nose.
Differences in nasal geometry, airflow resistance, and congestion may affect measured respiratory signals.
Importantly, the study analysed nasal airflow specifically, rather than depending solely on chest or abdominal movement.
3. Autonomic Nervous System Activity
The autonomic nervous system helps regulate involuntary body processes.
Its activity can influence breathing during rest, stress, sleep, and physical exertion.
For example, increased physiological arousal may change respiratory timing and variability.
4. Learned and Behavioural Influences
Breathing also changes when people speak, exercise, concentrate, or deliberately modify their breathing.
These behavioural influences create additional complexity.
Researchers want to identify which respiratory features remain relatively consistent in these changes.
Together, these mechanisms may help explain why breathing profiles contain identifying information, although the exact contribution of each factor needs further investigation.
Can Breathing Patterns Disclose Your Mental Health?
One of the study’s most interesting findings involved associations between breathing patterns and psychological characteristics.
The researchers reported that certain nasal respiratory features were related to measures of anxiety, depression, and behavioural tendencies.
This raises the possibility that long-term respiration monitoring could eventually provide additional information about psychological well-being.
However, an important distinction remains between detecting an association and diagnosing a condition.
Anxiety and Breathing
Anxiety can influence the body’s physiological arousal.
Some people breathe faster, have irregular respiratory timing, or change breathing depth during stressful situations.
The study identified relationships between respiratory patterns and anxiety-related measurements.
But these outcomes do not mean an algorithm can reliably distinguish anxiety disorders from ordinary stress, exercise, respiratory illness, or other causes of breathing changes.
Depression and Respiratory Characteristics
Researchers also investigated relationships between breathing and depression-related measures.
The data show that some respiratory characteristics may be associated with psychological traits.
Nevertheless, depression constitutes a complex condition diagnosed using clinical assessment and established diagnostic criteria.
Breathing measurements alone cannot establish whether someone has depression.
Additional studies involving larger, more varied populations and clinically diagnosed patients are needed before respiratory patterns can be used as validated diagnostic biomarkers.
What About Emotional Conditions?
Breathing can change during fear, excitement, relaxation, or sadness.
Yet different emotions can produce overlapping bodily reactions.
For instance, rapid breathing might reflect anxiety, physical exercise, fever, or other circumstances.
A system that detects increased physiological arousal does not necessarily know which emotion a person is experiencing.
The available evidence therefore supports cautious investigation into respiratory monitoring rather than claims of accurate immediate emotion reading.
Scientific interpretation: Breathing may provide complementary information about mental and physiological states, but it is not a substitute for validated mental health assessments.
Could Breathing Help Monitor Physical Health?
Respiratory monitoring is already important in medicine.
Clinicians assess breathing rate, rhythm, oxygenation, and other respiratory characteristics when evaluating numerous conditions.
The new research suggests that detailed long-term nasal airflow patterns might provide additional information beyond usual respiratory measurements.
Body Mass Index and Physiological Features
The study found relationships between respiratory features and BMI.
This is scientifically interesting because body composition and respiratory mechanics can influence breathing.
However, an association with BMI does not mean that nasal airflow alone provides an accurate or clinically useful measurement of body weight, obesity, or metabolic health.
Sleep and Breathing Patterns
Breathing changes naturally throughout sleep.
Researchers are interested in whether continuous respiratory monitoring could help us understand sleep-related physiology.
Established medical methods already monitor breathing during sleep, particularly when evaluating sleep-disordered breathing.
Respiratory fingerprint research could eventually complement these approaches, but it does not currently replace validated sleep studies.
Long-Term Health Monitoring
One potential application entails monitoring a person’s respiratory profile over time.
In theory, significant departures from an individual’s usual pattern might provide clues that their physiological state has changed.
However, an unusual breathing pattern is not inherently evidence of disease.
Exercise, allergies, nasal congestion, medications, environmental conditions, and many other factors can influence respiration.
Clinical research would need to establish whether changes in respiratory fingerprints reliably predict meaningful health outcomes before the technology could be recommended as a diagnostic tool.
How Does Breathing Compare With Other Biometric Technologies?
Respiratory identification is fundamentally different from several widely used biometric methods.
| Technology | Main identifying characteristic | Major consideration |
| Fingerprints | Friction ridge patterns | Requires suitable fingerprint capture |
| Facial recognition | Facial geometry and visual characteristics | Sensitive to image quality and presentation conditions |
| Iris recognition | Iris texture and structure | Requires appropriate eye imaging |
| Voice recognition | Acoustic and behavioral voice characteristics | Affected by noise, illness, and voice changes |
| Breathing biometrics | Respiratory timing and nasal airflow patterns | Requires sufficient reliable physiological measurements |
Unlike a fingerprint, breathing is a continuously changing physiological process.
This creates both benefits and complications.
Respiratory monitoring may eventually aid ongoing identity verification, but the same variability that makes breathing informative about health can also make it harder to use reliably for security.
The 96.8% identification result should not be directly compared with commercial fingerprint or facial recognition performance figures obtained under different conditions.
Security systems require additional evaluation, including false acceptance rates, false rejection rates, resistance to impersonation, and performance in actual populations.
These questions remain open for respiratory biometrics.
How Could Breathing Biometrics Be Used in the Future?
Researchers have identified several possible applications.
Continuous Authentication
Many electronic devices verify identity once, when someone logs in.
A future system might use physiological information to help confirm that the same authorised person continues using a device.
Respiratory patterns should theoretically contribute to this process.
However, the first study did not establish a commercially deployable, continuous authentication system.
Personalised Digital Health Monitoring
Wearable devices could potentially track an individual’s respiratory baseline and identify changes over time.
Such information might supplement other physiological measurements, including heart rate, activity, and sleep characteristics.
Before this approach becomes clinically useful, researchers must determine whether detected changes can be interpreted reliably and lead to better clinical outcomes.
Mental Health Research
Respiratory data may offer another way to investigate connections between the brain, behaviour, and physiological arousal.
For example, researchers could explore whether breathing changes precede, accompany, or follow changes in psychological state.
These relationships must be tested carefully because correlation does not establish causation.
Human-Computer Interaction
Breathing patterns should eventually serve as an additional signal for responsive digital systems.
Yet systems attempting to infer emotions from biological signals raise important questions about accuracy, user permission, and inappropriate psychological profiling.
For now, these remain possible applications rather than established uses of the research.
Why Breathing Biometrics Are Not Ready for Broad Adoption
Although the promising findings, important obstacles continue.
1. Limited Study Population
The first study involved 97 participants.
Although sufficient to show a promising experimental result, this does not validate performance across large, internationally diverse populations.
Accuracy may vary by age, health conditions, respiratory disorders, and other characteristics.
2. Changes Due to Illness and Activity
Respiratory patterns are influenced by exercise, infections, nasal obstruction, allergies, and other conditions.
A practical system must distinguish normal changes within the same person from differences between people.
This is particularly important if the technology is used for authentication.
3. Hardware Requirements
The research relied on a specialised device measuring nasal airflow through tubes positioned beneath the nostrils.
It was not a demonstration of invisible, long-distance breathing recognition.
Other technologies, including radar and acoustic sensors, can measure certain aspects of breathing, but their ability to reproduce the study’s recognition precision has not been established.
4. Comfort and Long-Term Wearability
A device that collects detailed nasal airflow information over long periods must be comfortable, safe, and practical.
Researchers would need to improve wearability and demonstrate that measurements stay reliable during everyday activities.
5. Clinical Validation
Detecting statistical relationships between breathing and health characteristics is only an early step.
A useful medical test must demonstrate appropriate sensitivity, specificity, reproducibility, and clinical value.
It must also be evaluated against accepted reference methods.
The 2025 research does not establish that respiratory fingerprints can independently diagnose anxiety, depression, or chronic disease.
6. Privacy and Information Security
Respiratory biometrics may carry both identifying information and sensitive health-related signals.
This combination elicits worries regarding how data should be collected, processed, stored, and shared.
Responsible applications would need strong safeguards, including meaningful consent, data minimisation, security protections, and restrictions on secondary uses.
Can Someone Change Their Breathing Fingerprint?
Because breathing is partly under voluntary control, people can temporarily modify their respiratory rate and rhythm.
For example, slow breathing exercises, breath-holding, speaking, and physical activity can alter breathing measurements.
However, the researchers found that some individual respiratory characteristics remained identifiable across repeated testing.
This suggests that voluntary changes do not necessarily erase the underlying information contained in a longer-term respiratory profile.
It remains unclear how reliably such systems would perform if someone intentionally attempted to disguise their breathing pattern.
Research on deliberate manipulation and spoofing resistance would be essential before respiratory biometrics could be trusted for security applications.
What the Research Proves and What It Doesn’t
Distinguishing observed results from future possibilities is essential.
| Research finding | What remains unproven |
| Breathing patterns identified participants with 96.8% accuracy under the study conditions | The same accuracy in the general population or commercial systems |
| Some respiratory characteristics remained recognizable over time | Reliability across every illness, activity, or environment |
| Breathing patterns were associated with certain psychological measures | Accurate diagnosis of anxiety or depression |
| Associations with BMI and physiological characteristics were observed | Reliable screening or diagnosis of specific diseases |
| Long-term nasal airflow monitoring was feasible | Practical everyday monitoring using standard consumer devices |
This is not a weakness of the research.
Scientific discoveries often commence by establishing that a measurable phenomenon exists.
The next stage entails assessing if it is reproducible, clinically meaningful, technically practical, and beneficial to users.
The Future of Respiratory Fingerprints
The discovery of individual nasal airflow signatures opens an interesting research direction at the intersection of neuroscience, biomedical engineering, and digital technology.
Future research may investigate whether breathing patterns can be measured more comfortably, analysed more reliably, and combined with other biological signals.
Larger studies could help determine which characteristics remain stable across populations and which change with illness, age, or environmental conditions.
Researchers must also establish whether tracking respiratory changes improves health assessment compared with simpler, standard methods.
There is a particularly important question about the connection between breathing and the brain.
If respiration patterns reflect certain aspects of neural regulation, longitudinal respiratory measurements may offer researchers another window into brain-body interactions.
However, this remains an emerging field, and clinical applications will require evidence beyond the first identification study.
Conclusion: Could Your Breath Become Your Next Fingerprint?
The discovery of respiratory fingerprints demonstrates that breathing contains more information than scientists once recognised.
By examining nasal airflow patterns, researchers identified individuals with remarkably great accuracy in a controlled study population.
They also found associations between respiratory characteristics and certain bodily and mental measures.
These results indicate that breathing could eventually support new approaches to identity verification, neuroscience research, and personalised health monitoring.
But the technology remains under development.
A respiratory pattern that distinguishes people in an experiment is not automatically a reliable security credential. Similarly, a statistical association with anxiety or depression is not the same as a medical diagnosis.
The real breakthrough is the demonstration that detailed breathing patterns carry measurable information about individual identity and aspects of physiology, not proof that breathing can already replace fingerprints or diagnose disease.
Additional research will determine whether this discovery becomes a useful tool for future digital health and biometric systems.
References
1. Soroka, T., Ravia, A., Snitz, K., et al. (2025). Humans have nasal respiratory fingerprints. Current Biology, 35(13), 3011–3021.e3.
Published online June 12, 2025; journal issue dated July 7, 2025.
Read the first peer-reviewed study.
2. Sheriff, A., Lane, G., and Zelano, C. (2025). Nasal breathing: Reading the mind through the nose. Current Biology, 35(13), R657–R659.
A scientific commentary examining the importance of the respiratory fingerprint findings.
3. Basilio, H. (2025). How you breathe is like a fingerprint that can identify you. Nature, 642, 851–852.
A research news article discussing the findings and likely implications.
4. Cell Press (2025). Humans have unique breathing “fingerprints” that may indicate health status.
A research announcement summarising the original study and its methodology.
Read the research announcement.
5. Soroka et al. (2025). Humans have nasal respiratory fingerprints, full research paper.