It’s likely most Americans have never heard of Clearview AI, Inc., but many still have a good chance of being in the company’s massive facial recognition database.

Across the country, facial recognition technology is being quietly acquired and used by government agencies of all sizes, but the full extent of police departments and agencies accessing or using the technology remains unknown. MuckRock and Open the Government want to change that.

MuckRock and Open the Government sending public records requests about facial recognition technology to hundreds of police agencies across the country. There’s lots more to do, however, so we put together a guide on doing your own investigations.