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macOS User Guide
- Welcome
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- Continuity
- Hand off between devices
- Insert photos and scans from iPhone or iPod
- Copy and paste between devices
- Unlock your Mac with Apple Watch
- Make and receive iPhone calls in FaceTime
- Get SMS texts from iPhone in Messages
- Control accessories in Home
- Send files between devices with AirDrop
- Use AirPods with your Mac
- Stream content to Apple TV
- Resources for your Mac
- Resources for your Apple devices
keychain
A keychain is a locked, encrypted container used in Keychain Access to store account names and passwords for apps, servers, AirPort base stations, and websites. You can also use keychains to store confidential information such as credit card numbers or personal identification numbers (PINs) for bank accounts.
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