# requestAuthorization(sensors:completion:) Requests user permission to read one or more sensors. ``` class func requestAuthorization(sensors: Set, completion: @escaping @Sendable ((any Error)?) -> Void) ``` ``` class func requestAuthorization(sensors: Set) async throws ``` ## Parameters `sensors` One or more sensors your app requests. `completion` A closure to run after the framework determines user authorization. ## Discussion Call this function for sensors in which [`authorizationStatus`](/documentation/SensorKit/SRSensorReader/authorizationStatus) is [`SRAuthorizationStatus.notDetermined`](/documentation/SensorKit/SRAuthorizationStatus/notDetermined) to display a prompt that requests user authorization. When the prompt dismisses, the framework calls the `completion` closure. Your delegate needs to wait for a call to [`sensorReader(_:didChange:)`](/documentation/SensorKit/SRSensorReaderDelegate/sensorReader(_:didChange:)) to determine whether the user approves sensor access. If you pass a sensor into this function for which the user already answered the in-app prompt, the framework cancels the prompt with [`SRError.Code.promptDeclined`](/documentation/SensorKit/SRError/Code/promptDeclined). When the user has already answered the prompt for a particular sensor, its [`authorizationStatus`](/documentation/SensorKit/SRSensorReader/authorizationStatus) is [`SRAuthorizationStatus.authorized`](/documentation/SensorKit/SRAuthorizationStatus/authorized) or [`SRAuthorizationStatus.denied`](/documentation/SensorKit/SRAuthorizationStatus/denied). The user may change the authorization status for a sensor in Settings > Privacy > Research Sensor & Usage Data. For more information about the authorization workflow, see [Configuring your project for sensor reading](/documentation/SensorKit/configuring-your-project-for-sensor-reading). --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)