Apple HIG Technology Integration Guide (29 items · Pay/Wallet/Health/Home/Siri/AI/Sign in/AR…)
Integration design specifications for 29 Apple system technologies (each entry = what it is + when to use it + key design points + branding/icon/naming rules). Payments & Wallet: Apple Pay (vs In-App Purchase · button styles · checkout flow)/ In-app Purchase (consumable/non-consumable/subscription · offer codes · Family Sharing)/ Wallet (5 pass types · order tracking · identity verification)/ Tap to Pay (hardware-free payment acceptance)/ Apple Card. Health & Research: HealthKit (Activity Rings specifications)/ CareKit/ ResearchKit (informed consent). Home & Car: HomeKit (home/room/accessory/zone · Siri commands)/ CarPlay (template-driven). Communication: Messages for Business/ iMessage apps & stickers/ Sign in with Apple (private relay email)/ SharePlay (3 Spatial Personas templates)/ Siri (SiriKit intent domains). Media & Recognition: AirPlay/ Live Photos/ ShazamKit/ Photo Editing/ Maps (indoor maps). AI: Generative AI (responsible design · transparency · hallucination prevention)/ Machine Learning (critical vs assistive · calibration · confidence · attribution · limitations · error handling). Identity: ID Verifier/ NFC. Cloud & Gaming: iCloud (transparent sync)/ Game Center (achievements/leaderboards/challenges/activities)/ App Clips (App Clip Codes)/ Mac Catalyst/ Always On.