As it continues to make changes to comply with the European Union’s Digital Markets Act, Apple is testing a new framework that brings automatic audio switching to third-party audio accessories. Here are the details.
Apple to expand third-party integration for audio accessories
In a recently-published support document for a framework called AudioAccessoryKit, Apple confirms it will let third-party accessory makers share headphone data with the system to support automatic audio switching.
In practice, this will allow iOS to intelligently route audio based on whether the third-party accessory is being worn, much like the experience Apple offers with AirPods today.
Importantly, the feature isn’t ready for general release, and is limited to development and EU users. Here’s Apple:
This framework supports iPhone and iPad only. You can develop and test an app that uses this framework on devices in any region. The framework currently builds only for development or Ad Hoc testing. The framework will support App Store submission, TestFlight, and alternative distribution at a later time.
Customer installations of your app can use the framework only on devices located in the EU that are signed in with an Apple Account with an EU country or region.
Apple says developers will need to pair their accessory using AccessorySetupKit, then register it with AudioAccessoryKit and declare which features it supports, such as automatic audio switching and placement detection.
From there, it will be the job of the accessory’s companion app to report events to the system, such as when a user puts on or takes off their headphones, so iOS can reroute audio accordingly.
According to the documentation, Bluetooth accessories can also report which devices they’re connected to, which will help the system determine the correct audio source in situations where multiple devices are in use.
Currently, the support document states that AudioAccessoryKit and most of its associated APIs are compatible with iOS 26.4 or later, and iPadOS 26.4 or later. To learn more about the new framework, follow this link.
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