Magicnation Forum

Wi-Fi Ranging, based on the IEEE 802.11az standard, is a technology that enables precise indoor location tracking with accuracy down to 40 cm (about 16 inches). Unlike GPS, which struggles indoors, Wi-Fi Ranging uses nearby Wi-Fi hotspots to pinpoint locations in crowded places like malls, airports, or convention centers.
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Key Features and Benefits:

1. Improved Indoor Navigation: Enables precise tracking in areas where GPS is unreliable.
2. Practical Applications:

• Retail: Guides users to specific products in stores.
• Smart Homes: Adjusts smart devices based on room detection.

3. Enhanced Accuracy: Outperforms older Wi-Fi Round Trip Time (RTT) tracking with accuracy reduced from 1–2 meters to 40 cm.

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How It Works
The technology leverages Fine Timing Measurement (FTM) and nearby updated Wi-Fi hotspots for precise triangulation. If hotspots lack 802.11az firmware, Android devices default to older RTT tracking with reduced accuracy.

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Current Limitations

• Hardware: Most Android phones lack the necessary support. Qualcomm's FastConnect 7900 chipset is among the first to support it, but devices featuring this hardware are yet to launch.
• Hotspot Updates: Requires firmware upgrades for Wi-Fi routers.

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Comparison with Other Technologies

• Apple UWB (Ultra-Wideband): Offers higher precision but shorter range, used in AirTags and the Find My network.
• Bluetooth 6: Promises precise tracking (Channel Sounding) but is still awaiting device integration.
• Wi-Fi Ranging: Balances accuracy and range, making it a versatile choice.

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What’s Next?
While Android 15 is ready for Wi-Fi Ranging, the rollout depends on widespread hardware adoption and hotspot firmware updates. In the coming years, this feature could revolutionize indoor navigation and tracking systems.

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