In data tokenization, specific sensitive data elements, such as credit card numbers, personally identifiable information (PII), or health records, are replaced with randomly generated tokens. These tokens have no exploitable value and are useless outside the specific context they were created for. This method helps in protecting data privacy and enhances security by minimizing the exposure of sensitive information during transactions and data processing workflows. The original data can only be retrieved through a secure vault that maintains the mapping between tokens and their corresponding sensitive data, ensuring that only authorized entities can access the original information.