Abstract: The technology described in this document is embodied in a method that includes processing data in a dataset that represents time-varying information about at least one pulse pressure wave propagating through blood in a subject acquired at a location of the subject. The method also includes determining whether one or more segments of the dataset were captured from a subject other than an expected subject by analyzing morphological features of the segments.

Abstract: The technology described in this document is embodied in a method that includes processing data in a first dataset that represents time-varying information about at least one pulse pressure wave propagating through blood in a subject acquired at a location of the subject. The method also includes providing information related to the data to a remote device.

Abstract: A weight-bearing device comprising: a weight-bearing surface configured to bear the weight of a subject; a first sensor module disposed in the device, the first sensor module configured to measure information about pulse waves propagating through blood in the subject, the subject located in contact with the weight-bearing surface; a second sensor module disposed in the device, the second sensor module configured to measure information about a motion of the subject; and a processing device configured to: receive a first dataset representing time-varying information about at least one pulse wave propagating through blood in the subject, wherein the time-varying information about the at least one pulse wave is measured using the first sensor module; receive a second dataset representing information about a time-varying motion of the subject, wherein the information about the time-varying motion is measured using the second sensor module; identify a first point in the first dataset, the first point representing a