Authentication verification using soft biometric traits

A system comprising:

• an image acquisition device configured to capture an image of a subject;
• and
• an image analysis engine comprising one or more processing devices, the image analysis engine configured to:
• capture, during a primary authentication process in which primary user identifying information is obtained for the subject using a device, first auxiliary user identifying information for short-term authentication verification of the subject, wherein the first auxiliary user identifying information comprises first eyebrow biometric information for the subject and first eyeglass frame information for the subject;
• determine, after the primary authentication process, to perform a short-term authentication verification process to verify identify of the subject;
• and
• perform the short-term authentication verification process, including:
• capturing second auxiliary user identifying information for the subject, including second eyebrow biometric information for the subject and second eyeglass frame information for the subject;
• comparing the first auxiliary user identifying information to the second auxiliary user identifying information including determining a match score that indicates a degree of match between the first auxiliary user identifying information and the second auxiliary user identifying information;
• determining whether the match score meets or exceeds a predetermined threshold score;
• in response to determining that the match score meets or exceeds the predetermined threshold score, verifying an authenticated state for the subject in which continued use of the device is allowed;
• and
• in response to determining that the match score does not meet or exceed the predetermined threshold score, end the authenticated state for the subject including disabling use of the device by the subject.

One or more non-transitory machine-readable storage devices comprising machine-readable instructions configured to cause one or more processing devices to execute operations comprising:

• capturing, during a primary authentication process in which primary user identifying information is obtained for a subject using a device, first auxiliary user identifying information for short-term authentication verification of the subject, wherein the first auxiliary user identifying information comprises first eyebrow biometric information for the subject and first eyeglass frame information for the subject;
• determining, after the primary authentication process, to perform a short-term authentication verification process to verify identify of the subject;
• and
• performing the short-term authentication verification process, including:
• capturing second auxiliary user identifying information for the subject, including second eyebrow biometric information for the subject and second eyeglass frame information for the subject;
• comparing the first auxiliary user identifying information to the second auxiliary user identifying information including determining a match score that indicates a degree of match between the first auxiliary user identifying information and the second auxiliary user identifying information;
• determining whether the match score meets or exceeds a predetermined threshold score;
• in response to determining that the match score meets or exceeds the predetermined threshold score, verifying an authenticated state for the subject in which continued use of the device is allowed;
• and
• in response to determining that the match score does not meet or exceed the predetermined threshold score, ending the authenticated state for the subject including disabling use of the device by the subject.