The Vision Pro comes with a downward-facing camera, which is announced for hand tracking. Last year, The Information's Wayne Ma reported that the headset (which was just a rumor at the time) would also use these cameras to track the user's body, including legs, but Apple has not announced this. The same report also described the headset's Optical ID (OpticID) iris authentication system, whose existence was eventually confirmed.
In a new report this week,Ma claimsApple actually removed full-body tracking from the Vision Pro a few years ago because engineers couldn't get its reliability up to par.
Apple originally planned to use full-body tracking technology for health and fitness features, Ma wrote. For example, Parkinson's disease can be detected by analyzing movement data over time. Despite rumors of Apple launching Apple Fitness+ service for Vision Pro, Apple did not talk about fitness during the product's lengthy launch event in June.
与此同时，MetaMeta, meanwhile, plans to add built-in upper body tracking to the Quest 3 in a December software update, which will take advantage of the Quest 3's face-down side camera. However, this feature does not track the user's legs, only the part above the waist. Meta also plans to launch a "generative legs" feature in the same update, using artificial intelligence to estimate a user's legs.
Meta is considered a leader in computer vision and machine learning, which could give it an edge over Apple in adding features like this. On the other hand, Apple executives may have set a higher quality bar that they may feel current technology has not yet surpassed.
Ma's report didn't mention whether Apple is still working on full-body tracking technology or if it has abandoned the work until future hardware becomes available. However, Apple has a long history of adding many important new software features to its products over time.
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