Routers can broadcast information. You could set your home router to instruct Uber’s mapping cars whether to store photography of your house or details of your home Wi-Fi.
These privacy settings could be part of how you set up Wi-Fi in your home, giving you the choice about whether you want a company to store and use that information or not. This is an example of how the GDPR’s right to restrict processing might work.
Home privacy settings for 47 Drysdale road
Seeing who accesses data about you, and what for
Balancing privacy and value
What happens to data about us after we die
Respecting privacy when collecting data
Taking data about you to other services
Exposing automated decision making
Work with IF to use GDPR to innovate in your marketplace