Tri-axial seismocardiography devices and methods

A computer-implemented method, comprising:

• providing at least one wireless tri-axial seismocardiography (SCG) device configured to measure and time-stamp movements of a user's chest caused by the user's heart beats;
• using the provided at least one SCG device, carrying out at least one test for each of a plurality of users, each test comprising:
• positioning the SCG device on the user's chest;
• using the positioned SCG device, detecting, sampling, digitizing and time-stamping movement vectors of the user's chest over a period of time in each of x, y and z directions;
• sending the time-stamped digitized movement vectors to a remote server over a computer network;
• identifying and storing, by the remote server, a set of fiduciary markers in each test using the time-stamped digitized movement vectors in each of x, y and z directions;
• associating each the sets of fiduciary markers with one of the plurality of users,
• subsequently testing of one of the plurality of users and generating a corresponding time-stamped digitized movement vectors;
• generating a subsequent set of fiduciary markers using the corresponding time-stamped digitized movement vectors in each of x, y and z directions;
• comparing the subsequent set of fiduciary markers generated during the subsequent test with the stored sets of fiduciary markers to identify at least one matching set of stored fiduciary markers;
• and
• identifying which of the plurality of users was subsequently tested as the user whose associated set of stored fiduciary markers at least partially matches the corresponding fiduciary markers generated during the subsequent test.