VisionOS 27, available to developers starting today, adds new support for actively-tracked accessories like motion controllers, which Apple is calling ‘spatial accessories’. Prior updates to visionOS allowed for passively-tracked objects which were tracked by their appearance but did not actively communicate with the headset. On the other hand, visionOS 27 allows Vision Pro to track accessories based on known IR LED patterns and positional data streamed from an accessory’s on-board IMU via Bluetooth. Spatial accessories can also send input data from things like buttons and thumbsticks, as detailed in a newly released developer session from Apple.