HKHeartRateSensorLocation.chest The heart rate sensor is located on the user’s chest. Declarationcase chest See AlsoLocationsHKHeartRateSensorLocation.otherHKHeartRateSensorLocation.wristHKHeartRateSensorLocation.fingerHKHeartRateSensorLocation.handHKHeartRateSensorLocation.earLobeHKHeartRateSensorLocation.foot