---
title: faceMetrics
framework: sensorkit
role: symbol
role_heading: Type Property
path: sensorkit/srsensor/facemetrics
---

# faceMetrics

A sensor that provides data describing a user’s face.

## Declaration

```swift
static let faceMetrics: SRSensor
```

## Discussion

Discussion The sample type for this sensor is SRFaceMetrics. You need to provide a reason to record face metrics by adding the SRSensorUsageFacialMetrics dictionary to the NSSensorKitUsageDetail key in the information property list.

## See Also

### Reading user activity sensors

- [accelerometer](sensorkit/srsensor/accelerometer.md)
- [heartRate](sensorkit/srsensor/heartrate.md)
- [mediaEvents](sensorkit/srsensor/mediaevents.md)
- [odometer](sensorkit/srsensor/odometer.md)
- [pedometerData](sensorkit/srsensor/pedometerdata.md)
- [rotationRate](sensorkit/srsensor/rotationrate.md)
- [siriSpeechMetrics](sensorkit/srsensor/sirispeechmetrics.md)
- [telephonySpeechMetrics](sensorkit/srsensor/telephonyspeechmetrics.md)
- [visits](sensorkit/srsensor/visits.md)
- [wristTemperature](sensorkit/srsensor/wristtemperature.md)
- [photoplethysmogram](sensorkit/srsensor/photoplethysmogram.md)
- [electrocardiogram](sensorkit/srsensor/electrocardiogram.md)