• Gather the MAC address of the two "strongest" wifi networks
• Send them over the Sigfox network
• Use Google Geolocation API to get an approximate location
• Publish to Slack a Google Maps snapshot of the computed location

This a demo and not intended to be used in production.
This does not tackle

• Battery optimisation
• Code robustness
• Data compression
• ...

Using a SiPy from Pycom, which combines Sigfox & Wifi connectivities.

The SiPy is programmed in micropython, find the sample code in the sipy folder

Basic nodeJS application, which receive the Sigfox callback & calls the Google & Slack apis

Check the server folder

Here is the kind of notification that you will receive :