If the smartphone camera can accurately detect breathing and heart rates, those rates can be used as supplementary biometric markers for enhancing smartphone security.
If this is so, the smartphones might need to be equipped with specialized sensors or gadgets to accurately measure these physiological parameters, such as pulse oximeter sensor, respiration rate sensor, and machine learning algorithm to process and analyse the data from the sensors that could differentiate between the user’s normal physiological patterns and potential anomalies.