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37 lines
2.4 KiB
Markdown
37 lines
2.4 KiB
Markdown
---
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layout: page
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title: "Location"
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description: "Documentation about the location tracking abilities in Home Assistant for iOS"
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date: 2016-10-25 15:00:00 -0700
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sidebar: true
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comments: false
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sharing: true
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footer: true
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redirect_from: /ecosystem/ios/location/
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---
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## {% linkable_title Location tracking when outside a Home Assistant zone %}
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Home Assistant for iOS receives _significant location updates_ from iOS. Whenever an update is received, it is sent to Home Assistant. Roughly, an update is received everytime that your device transfers to a new cellular tower, a significant amount of time has passed (usually a couple hours) or a connection state changes and the system notices your location recently changed.
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Apple [defines][apple-location-programming-guide] significant significant-change location updates as:
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> The significant-change location service delivers updates only when there has been a significant change in the device’s location, such as 500 meters or more.
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They also say in the [Energy Efficiency Guide][apple-energy-guide]:
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> Significant-change location updates wake the system and your app once every 15 minutes, at minimum, even if no location changes have occurred.
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Finally, I think this answer from [Stack Overflow][stackoverflow] says it best:
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> The significant location change is the least accurate of all the location monitoring types. It only gets its updates when there is a cell tower transition or change. This can mean a varying level of accuracy and updates based on where the user is. City area, more updates with more towers. Out of town, interstate, fewer towers and changes.
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What's the real story on significant-change location updates? Who knows, because Apple keeps it private.
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## {% linkable_title Location tracking in Home Assistant zones %}
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At launch, Home Assistant for iOS sets up geofences for all zones in your Home Assistant configuration. Enter and exit notifications are sent to Home Assistant.
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[apple-energy-guide]: https://developer.apple.com/library/content/documentation/Performance/Conceptual/EnergyGuide-iOS/LocationBestPractices.html#//apple_ref/doc/uid/TP40015243-CH24-SW4
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[apple-location-programming-guide]: https://developer.apple.com/library/content/documentation/UserExperience/Conceptual/LocationAwarenessPG/CoreLocation/CoreLocation.html#//apple_ref/doc/uid/TP40009497-CH2-SW9
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[stackoverflow]: http://stackoverflow.com/a/13331625/486182
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