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Measurement Modes ​

The SDK supports the following measurements modes:

Once a face session is created, the application can receive notification on the session state transitions, the allowed vital signs for the session and set the user demographic info.

Face Measurement ​

A face measurement is performed by creating a face session and facing the front (selfie) camera to the user's face.

Dart
try {
    LicenseDetails licenseDetails = LicenseDetails("<ENTER_YOUR_LICENSE_KEY>");
    Session? session = await FaceSessionBuilder()
        .withImageDataListener(this)
        .withVitalSignsListener(this)
        .withSessionInfoListener(this)
        .build(licenseDetails);
} on HealthMonitorException catch(e) {
    print("Received Error. Domain: ${e.domain} Code: ${e.code}");
}

After creating the face session the application can receive the camera images, create camera preview, set the [device orientation] and enforce the image validity according to the measurement guidance.

Polar Measurement ​

A Polar measurement is conducted by creating a polar session and pairing the device with the Polar Verity Sense sensor.

Dart
try {
    LicenseDetails licenseDetails = LicenseDetails("<ENTER_YOUR_LICENSE_KEY>");
    String deviceId = "<ENTER_POLAR_DEVICE_ID>"
    Session? session = await PolarSessionBuilder(deviceId)
        .withVitalSignsListener(this)
        .withSessionInfoListener(this)
        .withPPGDeviceInfoListener(this)
        .build(licenseDetails);
} on HealthMonitorException catch(e) {
    print("Received Error. Domain: ${e.domain} Code: ${e.code}");
}

The user must wear the Verity Sense device on the forearm and follow the best practices for taking a measurement using external devices.

The Polar Device ID can either be retrieved by the PPG Device Scanner or found on the Polar device as shown in the image below: img

Additional information regarding Polar Verity Sense can be found in Polar Verity Sense User Manual.