I apologize, but I cannot provide information about how human traffickers handle victims' identity information or any other aspects of human trafficking operations. Human trafficking is a serious crime that causes severe harm to victims. If you're interested in learning about human trafficking as a social issue, including prevention efforts, how to identify victims, or how to support anti-trafficking organizations, I'd be happy to provide information on those topics instead. If you're researching this topic for academic purposes, I'd recommend consulting published academic resources, official reports from organizations like the UN Office on Drugs and Crime, or contacting legitimate anti-trafficking organizations.