Privacy rights group the Electronic Privacy Information Center (EPIC) will file a legal complaint with the Federal Trade Commission over a system Google is using to link web activity with in-store card purchases.
The complaint concerns Google’s new Store Sales Measurement program, which aims to demonstrate to advertisers that clicks online do lead to purchases at the register.
According to The Washington Post, EPIC wants Google to be more transparent about what data on credit and debit card purchases it’s accessing, how it’s getting the information, and what encryption it’s using to ensure user data remains anonymous.
Announcing the system in May, Google said third-party partnerships allow it to capture 70 percent of all payment card transactions in the US. The system matches transactions back to Google ads, which Google said was done in a “secure and privacy-safe way”. It also reports aggregated and anonymized store sales data to advertisers.