@Override
    public void populateAttributes(final AuthenticationBuilder builder, final AuthenticationTransaction transaction) {
        val inweboCredential = (InweboCredential) transaction.getCredentials().iterator().next();
        builder.addAttribute(ATTRIBUTE_NAME_INWEBO_AUTHENTICATION_DEVICE, inweboCredential.getDeviceName());
    }
Authentication attribute to capture device name.
support/cas-server-support-inwebo-mfa/src/main/java/org/apereo/cas/support/inwebo/authentication/InweboAuthenticationDeviceMetadataPopulator.java