Abstract: A system includes a sensing assembly configured to be disposed on a mastoid of a user. The sensing assembly includes a housing, a first sensor disposed in the housing and configured to measure a first Phybrata signal from the user, and a second sensor disposed in the housing and configured to measure a second Phybrata signal from the user, the second Phybrata signal different from the first Phybrata signal. A controller is in communication with the sensing assembly. The controller is configured to : receive a first Phybrata data from the sensing assembly, the first Phybrata data including information obtained from the first Phybrata signal and the second Phybrata signal. The controller is configured to determine a Phybrata parameter associated with the user based on the first Phybrata data, and determine a Phybrata signature associated with the user based on the Phybrata parameter.
