Geofencing with Azure Maps

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#iot #azureiot #azuremaps

[hunterhenryk]

Seems like this could get expensive in your example use cases vs avoiding the API and using pure application code?

[heiko]

While I understand the "inaccurate GPS" claim, i do NOT understand why I need a buffer when it comes to the result of being inside or outside the polygone.
Its a mathematical function to calculate whether a coordinate is within a defined polygone, or not. Thats not something special for GPS! There is absolutely no reason for a "buffer".
Do I miss something here?
..oh now i got that. The buffer is there because the longitude/latitude being send to the API (from the IoT device) could be affected by the GPS inaccurance.
OK, makes sense then to have the buffer as a margin to be not too strict. On the other hand, one could setup the Azure fence polygone just a bit wider or narrower to cover that buffer.
Or?!