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# CLLocationSourceInformation

Information about the source that provides a location.

```
class CLLocationSourceInformation
```

## Overview

[`CLLocationSourceInformation`](/documentation/CoreLocation/CLLocationSourceInformation) contains information about the source that provides a [`CLLocation`](/documentation/CoreLocation/CLLocation) instance, such as instances that [`locationManager(_:didUpdateLocations:)`](/documentation/CoreLocation/CLLocationManagerDelegate/locationManager(_:didUpdateLocations:)) delivers. For example, an app may choose to check the source information and reject locations if the [`isSimulatedBySoftware`](/documentation/CoreLocation/CLLocationSourceInformation/isSimulatedBySoftware) property is `true` when the developer isn’t debugging or testing the app.

## Topics

### Creating a location source information object

[`init(softwareSimulationState:andExternalAccessoryState:)`](/documentation/CoreLocation/CLLocationSourceInformation/init(softwareSimulationState:andExternalAccessoryState:))

Creates an instance of location source information.

### Identifying the source of location data

[`isProducedByAccessory`](/documentation/CoreLocation/CLLocationSourceInformation/isProducedByAccessory)

A Boolean value that indicates whether the system receives the location from an external accessory.

[`isSimulatedBySoftware`](/documentation/CoreLocation/CLLocationSourceInformation/isSimulatedBySoftware)

A Boolean value that indicates whether the system generates the location using on-device software simulation.


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