The article discusses the author's experience of verifying their identity on LinkedIn through a company called Persona, which required them to provide sensitive information such as their passport and facial geometry. The author found that Persona's privacy policy and terms of service allowed for the collection and use of this data in ways that raised concerns about privacy and security. The data is stored in the US and subject to the CLOUD Act, which allows US law enforcement to access it. The author recommends that users request their data, request deletion, and contact Persona's Data Protection Officer to object to the use of their documents as AI training data.