[quote=“rafale77, post:5, topic:195850”][quote=“ember1205, post:4, topic:195850”][quote=“rafale77, post:2, topic:195850”]It is only going to be as accurate as your GPS on the phone will be through iCloud. Generally speaking it is pretty good but iCloud doesn’t poll your phone constantly and has some margin of error which increases as you move between polling.
iCloud polls your phone. The app polls iCloud. There can be gaps caused by the intervals. You can go look at your iCloud account and see how accurate it is.[/quote]
This is incorrect.
GPS location, as a consumer service, is regulated by the Federal Government to only be accurate to within about 10’. Phone manufacturers have increased the accuracy to narrower distances, partly by adding WiFi signaling to assist with triangulation and such.
iCloud has NOTHING to do with calculation of the phone’s location, and is ONLY used to store location data that the phone sends to iCloud for the Find My iPhone service on the device itself. iCloud can be completely disabled on the device and it will function correctly.
Geofencing triggers events based on transitions, not based on mere presence. At .17 miles distance from the center of a .15 mile fence, is a little over a 100’ difference in distance. That’s PLENTY of difference to cause the geofence to trigger a change. Do you have Location Services allowed for the Vera app?
I have everything set up correctly on my phone and have found that I need to go a few hundred feet beyond the border of my fence to get my scene to fire that handles “Leaving area” conditions while entering the area seems to only require coming over the line by 50’ or so. I haven’t really narrowed this down because A) the transitions always happen while I’m driving and not moving at a slow pace like walking and B) cell coverage near my house is very weak and may play a part in the delays.[/quote]
You do realize that this section and question is not about vera geofencing but the iphone locator plugin right?
The iphone locator app polls icloud for the device location. The data is sent by icloud as a json to the vera unit with coordinates which the plugin sends to google map to calculate distance to your home location… To answer your question, no I do not use the vera geofence for the very reason you are bringing up. I am finding it very unreliable. The vera geofence does not rely on iCloud at all indeed but this isn’t the question here.
The iphone locator plugin has been very accurate for me as long as the location of the phone is correct on iCloud. I found iCloud reports having variations of up to 20meters. If one uses the “driving” metering distance on google map, it can throw the location off from one street to the other. I was sitting at one of my neighbors house and kept on tripping my house mode on and off without moving because his house was right at my distance limit so depending on where icloud located the device, google thought I was either on the front street or the back street which then changes the driving distance by 100meters.
Anywho. @mtruppi, you would not happen to have a delay setup to change your mode to away do you? Not sure if amg0 built in some tolerance to avoid tripping the fence when one is right at the limit. I have not observed it. All my variations seem to always be due to the accuracy of the location which I can verify on icloud.[/quote]
Well, when I was referencing present/away it was just in the device control. There is no delay in anything I am just observing the device.
All I was saying is the following.
Geofence is set at .15m and polling decreases from 3600s to 10s at the same .15m
When the device is .17 away the app is aware of the change because it changes to 10s polling but the device does not change it’s state (not house mode away) to away. All I was asking why the present/away side would not flip at .17 but the polling side would. Again, not a big deal just something I saw.