Amazon was sued for its "Ring" doorbell device over privacy concerns in the latest lawsuit.

One world's most popular retailer was sued on Monday by a Virginia resident over what he said were privacy violations after the company's Ring doorbell cameras at friends and family members' homes collected and stored images of his face using facial recognition ‌software.

The plaintiff, Charles Sigwalt, who is seeking class-action status, sued Amazon in federal court in Seattle alleging a feature known as “Familiar Faces” retains images of passersby without their consent. He is seeking at least $5 million in damages for the class.

Familiar Faces, which is optional, uses artificial intelligence to identify and remember people so that when they return to a home or a business, notifications can include specific names.

Those affected “did not consent to have their privacy rights violated at the entrance way,” according to the suit. “Millions of other Americans passed by a Ring security camera and unknowingly had their facial recognition information collected.”

The suit, which seeks unspecified damages for those impacted, is just the latest in a string of controversies around Amazon’s Ring, the unit that makes the eponymous smart doorbells and security systems.

Ring, which Amazon bought in 2018 for $1 billion, in February faced a backlash over a service that it advertised during the Super Bowl that it said helps ‌people find lost dogs by activating its neighborhood network of cameras.

 Users and privacy advocates were concerned the cameras could be deployed to surveil whole neighborhoods or areas.

Following the criticism, Ring in February ended an unrelated partnership with Flock Safety, which deploys license plate readers and cameras for law enforcement use.

In 2023, the U.S. Federal Trade Commission reached a $5.8 million settlement with Ring over privacy allegations that it said included a former employee spying on female customers in their home bedrooms and bathrooms.

The FTC said Ring employees had unrestricted access to customers’ sensitive video data, allowing them and contractors to view and download it. Amazon denied any wrongdoing as part of the settlement.

U.S. Democratic Senator Ed Markey alleged in 2022 that Ring violated people’s privacy through its partnerships with law enforcement, allowing them access to some user footage without proper consent.

In the suit filed on Monday, Sigwalt said Amazon’s “conduct here represents a profound privacy failure for millions of people who are now being tracked by Amazon.”

The case adds to growing scrutiny over how smart home devices collect and use sensitive biometric data, raising fresh concerns about home surveillance.