Surveillance scraping happens in many forms, hidden and unhidden. It is difficult- if not impossible - to police what cannot be proven, even when it is a foregone conclusion.
How can someone shield themselves from cameras monitoring traffic flows and license plate readers, they can't. The clarity of these cameras is ever increasing and can possibly determine who is with you in a car, whether they are buckled up and discern the validity of insurance and safety. Also -of course- new and modern vehicles have black boxes recording a myriad of details that are accessed in police investigations.
This kind of makes mobile cell-phone ping triangulations seem simplistic.
And what of the supermarket memberships that grant points for purchases. The information gathered (supposedly in the aggregate) would be a treasure trove for insurance companies who could make predictions based on dietary practices, e.g. knowing of smoking or drinking, or cancer prone diets.
Some markets actually have RFID tags affixed to certain products, both for inventory control and to determine purchasing habits i.e. if this- then that likelihoods or trends that can then be used for the efficacy of displays and pairing products.
This subject has the devil in the details and is evolving swiftly. It is impossible to completely put the genie back in the bottle. Surveillance tech is being meshed with Ai to be more determinative of intent. This is the extrapolative science of deduction, like geofencing.
We are entering a danger zone when deep-fakes can muddy an already unclear opaque reality. Every nation possesses an intelligentsia (whom for some) could be considered enemies of the state that could be framed, set-up or implicated in crimes they did not commit.
Pardon the cliche, but I have scratched the surface of a thorny issue that will not go away, nor will it heed to a nebulous set of ethical guidelines regardless of their principled intentions. I wish this was not the case. Perfect privacy only exists within one's dwelling and with though-the-wall tech, even that can be challenged.