In 2016, Stacy Rosenbach filed the lawsuit in Lake County Circuit Court on behalf of her son, Alexander, after Six Flags allegedly scanned his fingerprint without permission during a school field trip. Six Flags argued that the teenager suffered no actual harm, such as identity theft. The case made it to the Illinois Supreme Court, which in 2019 ruled the state’s privacy law did not require allegations of any injury, allowing the Six Flags class action to proceed.