What is Household IP Tracking?
Ad networks group every device on the same Wi-Fi network into one household profile. This is why you may see ads for something another person in your home searched for.
Where it comes from
Ad-Tech Identity Graphs (2010s)
How it hooks you
Exploits the illusion of being overheard: 'my phone is listening' moments are usually the household network being profiled as a single unit.
What the research shows
Data brokers bundle devices into 'household identity graphs', letting one person's search activity target everyone at the same address.
How to resist it
Use a reputable VPN to mask your household IP, and disable cross-app tracking in your OS settings.