v. Meta Platforms, Inc., was brought by Illinois resident Francisco Alvarez, California resident Jeremy Wahl, and each man’s minor child.

It centers on NameTag, an unreleased face-matching tool developed for Meta’s Ray-Ban and Oakley glasses and the Meta AI companion app.

The plaintiffs allege Meta reduced faces pulled from its platforms into numerical “faceprints,” biometric templates that NameTag could match against people encountered in public.

The system’s existence surfaced in June, when Wired found inactive NameTag code inside the Meta AI app, which has been downloaded more than 50 million times.

The complaint alleges Meta violated the Illinois Biometric Information Privacy Act (BIPA), a state law requiring written consent before a company collects biometric data, as well as California publicity and privacy law.