Researchers in Israel have developed a new biometric identification method based on unique nasal breathing patterns, achieving a 96.8 percent accuracy rate in distinguishing individuals. The study, conducted by scientists at the Weizmann Institute of Science and the University of Haifa, presents nasal respiration as a promising alternative to conventional biometric systems like fingerprints or iris scans.
Breathing Patterns as Biometric Fingerprints
The research team designed a lightweight, wearable device known as the “Nasal Holter,” which uses soft tubes placed in each nostril to monitor airflow over extended periods. Ninety-seven volunteers wore the device continuously for 24 hours during typical daily activities and sleep. The system measured nasal airflow from each nostril separately, allowing researchers to generate personalized respiratory profiles, or “breathing curves.”
These patterns were found to be stable over time, with follow-up recordings up to two years later confirming their consistency in 42 participants. The researchers argue that these unique respiratory signatures function similarly to fingerprints, offering a new avenue for biometric identification—one that does not require a user to engage actively with a scanner or sensor.
“We stumbled upon a completely new way to look at respiration. We consider this a brain readout,” said Prof. Noam Sobel of the Weizmann Institute in an interview with The Times of Israel. The team believes that these findings could lead to the development of non-invasive, continuous authentication systems, particularly useful in scenarios where traditional biometrics are impractical.
Applications and Broader Security Context
Because the nasal biometric system works passively during sleep and routine activity, it may enable new applications in continuous identity verification. These could include medical monitoring, contactless access control, or integration into wearables for seamless authentication. Unlike fingerprint or retinal scanners that require user action, this method offers real-time passive identification with minimal user effort.
The timing of the study aligns with global interest in next-generation biometric tools. Australia’s Department of Home Affairs issued procurement notices as early as 2021 for portable handheld biometric devices to support identity verification by the Australian Border Force, with additional initiatives continuing into 2024. Such efforts underscore the growing demand for adaptable, field-ready biometric solutions.
While nasal breathing biometrics are still in early stages of development, their high accuracy and passive functionality make them a compelling addition to the expanding toolkit of identity verification technologies. The researchers envision these systems being used independently or in combination with other modalities to improve overall system resilience and user convenience.
Sources: Current Biology, PubMed, Times of Israel, Blanquivioletas
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by Cass Kennedy
