Apple Platform Security
- Welcome
- Intro to Apple platform security
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- System security overview
- Signed system volume security
- Secure software updates
- Operating system integrity
- Activating data connections securely
- Verifying accessories
- BlastDoor for Messages and IDS
- Lockdown Mode security
- System security for watchOS
- Random number generation
- 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 authorisation 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
- Glossary
- Document revision history
- Copyright
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Ultra Wideband security in iOS
The new Apple‑designed U1 chip uses Ultra Wideband technology for spatial awareness — allowing iPhone 11, iPhone 11 Pro and iPhone 11 Pro Max or later iPhone models to precisely locate other U1‑equipped Apple devices. Ultra Wideband technology uses the same technology to randomise data found in other supported Apple devices:
MAC address randomisation
Wi-Fi frame sequence number randomisation
See alsoWi-Fi privacy
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