Third party data is increasingly under threat. As one case-in-point, a bill introduced this week would amend the New York City administrative code to prohibit the transfer or sharing of consumer location data with third parties within city limits.

In other words, the party that collects or captures the data could not share it with another entity. It appears to be a very bright line.

Won’t affect first parties. The proposed law would not eliminate use of location for ad targeting and offline attribution; first party platforms and publishers could still do these things. But it would impact data brokers, MarTech platforms, agencies and the programmatic ecosystem, which relies on the free flow of third party data.

The bill is explicitly directed at telecom companies and mobile apps that capture or have access to user location. It’s designed to protect consumers who may not be aware their location data is being shared. But the law would appear to not make an exception for opt-in consent to sharing.

Each violation worth $1,000. Violations would bring $1,000 in penalties per incident, up to a maximum of $10,000 per day. New York City’s Department of Information Technology would enforce the law but individuals would also have a right to sue and collect damages.

The bill provides for a number of exceptions, including for selected law enforcement use cases and for other first responders. It would take effect 120 days after being signed into law.

Passage not guaranteed. The bill still faces a number of hurdles and its passage is not a forgone conclusion. Technology and advertising interests will probably seek to block or dilute the bill before passage. And even if passed, it would almost certainly face legal challenges. But the genie is out of the bottle. We may see similar rules proposed in cities across the country in the coming months.

Google and Facebook won’t be impacted. Google and Facebook would not be affected because they can collect and use location data for targeting and attribution within the closed environments of their platforms. They are first parties. But programmatic ad networks would probably be prevented from targeting ads any more precisely than “New York City.” And it’s unclear if even that level of user location targeting would be allowed.

Why we should care. Assuming the law passes, there are some unanswered questions. Among them, will advertisers or agencies (or tools used by agencies) be blocked from accessing location data regardless of the ad platform? In other words, Google and Facebook could use location but would reporting to customers violate the law?

The more local and state rules there are that seek to govern privacy and data security the more these jurisdictions make the case for a uniform federal law and preemption. Paradoxically, these local laws are appearing precisely because there are no new privacy rules at the national level. And it’s unlikely we’ll see any before the 2020 elections.

About The Author

Screenwerk, about connecting the dots between digital media and real-world consumer behavior. He is also VP of Strategy and Insights for the Local Search Association. Follow him on Twitter or find him at Google .