When connected to my home network, I only use the Facebook app on my phone. I never log into Facebook via a browser on my laptop or other computer connected to my home network.
How is it possible that when I search for something on Google on any computer connected to my home network, I am soon after targeted by ads relating to what I was searching for, through the Facebook app on my phone.
I understand that the my public IP address will be the same when I use any device on my home network connecting to the internet.
However, how is data getting shared exactly in detail? I search for something on Google on any computer on my network. Then Google or websites know my IP address and track my activity, ok, but how do I then get targeted via ads via the Facebook app on my phone?
It's clear that Facebook will know my public IP address, and so will Google and websites, but where is the connection and how does my IP address get shared? Thanks