Apple Platform Security
- Welcome
- Intro to Apple platform security
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- System security overview
- Signed system volume security
- Secure software updates
- Background Security Improvements
- Operating system integrity
- BlastDoor for Messages and IDS
- Lockdown Mode security
- System security for watchOS
- Random number generation
- Communicating emergency information using satellites
- Apple Security Research Device
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- Services security overview
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- Apple Pay security overview
- Apple Pay component security
- How Apple Pay keeps users’ purchases protected
- Payment authorization with Apple Pay
- Paying with cards using Apple Pay
- Contactless passes in Apple Pay
- Rendering cards unusable with Apple Pay
- Apple Card security
- Apple Cash security
- Tap to Pay on iPhone
- Secure Apple Messages for Business
- FaceTime security
- SharePlay security
- Nearby sharing security
- Glossary
- Document revision history
- Copyright and trademarks
Nearby sharing security
Nearby sharing is a visionOS feature that allows people to share content from their apps with other nearby visionOS users. Nearby sharing is set to Contacts Only by default, which means both parties need to be in each other’s Contacts to allow automatic discovery. Non-contacts can pair using a manually-exchanged PIN displayed on the initiator’s device and entered on the joiner’s. Users can choose to turn off the feature entirely by deselecting “Allow Nearby People” in Settings or Control Center.
When a user chooses to share content, a secure SharePlay session is established and used for sharing the content between the participants. Content actively being shared in a Nearby Sharing session is highlighted to the user with a green visual indicator.
To allow virtual objects to be placed in the same location for all users, Collaborative Map Building (CMB) takes place when devices first connect. They exchange information about reference objects within their environment to establish a shared coordinate system for virtual object placement. As CMB can be used to infer location, it’s initially performed only after a user accepts an invitation to join a Nearby Sharing session with a given participant. However, for up to 45 days after that initial invite is accepted, CMB runs opportunistically for subsequent invites that occur in that same location with that participant. CMB data is also transmitted using end-to-end encryption, and map merging happens locally on each device; no centralized spatial map is ever stored or shared beyond the participants.