Unverified50% confidenceFactExact time
Passkeys introduced in macOS Sonoma and iOS 17 rely on iCloud Keychain for cross-device synchronization.
1
Sources
50%
Confidence
Long-term
Relevance
8/4/2026
First Seen
Sources
苹果Mail发送非iCloud邮件时为何连接iCloud服务器？原因解析
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