Leaker "pdfu" today shared additional code-level details about the Apple Watch Series 12 and Ultra 4's new day summary feature, offering a clearer picture of what the AI tool will actually track.In a new post on X, pdfu said that the summaries generated by the feature, referred to in code as "Ambient Sensing," include fields for time and date, location, meal information, and the people present along with their relationship to the user.The leaker also listed dozens of activity categories the underlying code supports, covering everything from meal prep and household chores to workouts, commuting, shopping, and screen time, alongside a catch-all "Unknown" category. The full list of activity categories is as follows:Eating MealSnackingPreparing MealMaking DrinksBakingPlatingVacuumingTaking Out TrashWashing DishesLoading LaundryFolding LaundryMowing LawnWatering PlantsGardeningMoppingDustingCleaningWalkingRunningCyclingStrength TrainingYogaEllipticalHIITCardioHikingRegular CommuteDrivingFlyingRiding TrainRiding BusGrocery ShoppingClothes ShoppingHome Goods ShoppingHardware ShoppingTaking BreakWaitingRelaxingSocial DiningMeetingPartyingGatheringFamily TimeBrushing TeethFlossingGetting DressedApplying LotionsWatching TVUsing TabletUsing LaptopUsing DesktopReading E-ReaderUsing ATMAttending ClassAttending SermonAttending KeynoteReading BookDoing HomeworkTaking NotesWorkingDrinkingUnknownThe post builds on a report from Bloomberg's Mark Gurman, who said the Apple Watch Series 12 and Ultra 4 would ship with a feature that analyzes a user's day, including conversations they've had, and provides a summary of what took place. Gurman noted the system apparently does not record or store audio and cannot produce a transcript to preserve privacy, and it is unclear how exactly it works. The Apple Watch Series 12 and Ultra 4 are expected to be announced later today alongside the iPhone 18 Pro, ‌iPhone 18 Pro‌ Max, and the first foldable iPhone, dubbed the "iPhone Duo."Related Roundups: Apple Watch 11, Apple Watch Ultra 3Buyer's Guide: Apple Watch (Don't Buy), Apple Watch Ultra (Don't Buy)Related Forum: Apple WatchThis article, "Apple Watch's New AI Day Summary Tracks These Activities" first appeared on MacRumors.comDiscuss this article in our forums