Olfactory sensor (IMAGE) Kyushu University Caption Picture of an artificial olfactory sensor used for biometric authentication based on breath. The sensor is made of a 4x4 channel array for a total of 16 sensors. Each sensor detects a specific range of compounds found in human breath. The data is then processed by a neural network, which then determines the individual. Credit Kyushu University/Yanagida Lab Usage Restrictions Only for media and non-commercial use License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.