---
title: NSAccessoryTrackingUsageDescription
framework: bundleresources
role: symbol
role_heading: Property List Key
path: bundleresources/information-property-list/nsaccessorytrackingusagedescription
---

# NSAccessoryTrackingUsageDescription

A message that tells a person why the app is requesting access to track accessory position and location.

## Discussion

Discussion Use this key to indicate that your app requires access to accessory-tracking data. The first time your app tries to access accessory-tracking data, the system prompts for permission. Provide a string for the prompt that explains why your app needs access.

## See Also

### Vision

- [NSWorldSensingUsageDescription](bundleresources/information-property-list/nsworldsensingusagedescription.md)
- [NSHandsTrackingUsageDescription](bundleresources/information-property-list/nshandstrackingusagedescription.md)