Continual biometric authentication

A method for continual biometric authentication of a user on a user device, the method comprising:

• creating, for a first user, a first biometric authentication reference model, the creating comprising:
• instantiating a first instance of a biometric authentication application on a user device associated with the first user and a second user;
• scanning, using the user device, a first plurality of biometric identifiers of the first user;
• and
• combining the first plurality of biometric identifiers to create the first biometric authentication reference model;
• storing the first biometric authentication reference model at a database accessible to the user device;
• creating, for the second user, a second biometric authentication reference model, the creating comprising:
• instantiating a second instance of a biometric authentication application on the user device;
• scanning, using the user device, a second plurality of biometric identifiers of the second user;
• and
• combining the second plurality of biometric identifiers to create the second biometric authentication reference model;
• storing the second biometric authentication reference model at the database;
• in response to an instantiation of a session on the user device, determining that the session was initiated by the first user;
• in response to determining the session was initiated by the first user, initiating a first continual biometric comparison, the first comparison comprising comparing captured biometric identifiers to the first plurality of biometric identifiers;
• and
• in response to a determination that the second user has replaced the first user during the session, initiating a second continual biometric comparison, the second comparison comprising comparing captured biometric identifiers to the second plurality of biometric identifiers.

Apparatus for executing a continual biometric authentication of a user on a user device, the apparatus comprising:

• a processor;
• one or more sensors in electronic communication with the processor, the one or more sensors configured to capture biometric identifiers of a user,
• an authentication model run by the processor configured to:
• execute a biometric authentication application;
• scan, using the one or more sensors, a plurality of biometric identifiers of a user;
• and
• combine the plurality of biometric identifiers to create a biometric-authentication reference model of the user;
• a database configured to store the biometric authentication reference model;
• wherein the processor is further configured to instantiate a session, the session initiated by a user, the processor further configured to:
• instruct the one or more sensors to execute a continual biometric scan and to continue the scan until the session is terminated;
• receive from the one or more sensors, captured biometric identifiers;
• execute an algorithm to:
• compare the captured biometric identifiers to the biometric identifiers stored in the biometric authentication reference model;
• and
• identify a number of comparison points between the captured biometric identifiers and the stored biometric identifiers;
• when the number of identified comparison points is determined by the algorithm to be below a predetermined threshold number, initiating a passcode request on a graphical user interface (“GUI”) to confirm a preset user-selected passcode stored at the database;
• in response to an input of a passcode response on the GUI, compare the passcode response with the preset user-selected passcode;
• and
• terminate the session in response to a determination that the passcode response does not match the preset user-selected passcode.