Thats cool. I wanted to do something similar with ESP-8266 to track visitors in a tourist attraction I worked for. But as it turned out it was illegal by law because a law forbids to track people through "electromagnetism". As it turned out it the reason for the law was to not make it possible to track people in their apartments by registering wherever they where watching TV and similar stuff.
We never wanted to track an individual person and would have hashed the MAC, nor did we want to get any data from them (phone brand or whatever). We wanted to be sure to not have more than 1000 people in the building (another law) and for security reasons we did not have turnstiles at the exit.
At the end we had to use cameras that counted heads...
We never wanted to track an individual person and would have hashed the MAC, nor did we want to get any data from them (phone brand or whatever). We wanted to be sure to not have more than 1000 people in the building (another law) and for security reasons we did not have turnstiles at the exit.
At the end we had to use cameras that counted heads...