PhilSys takes security measures to ensure confidentiality and data protection. They strictly collect and store only necessary information in accordance with the law. No political, socio-economic, religious or criminal data is collected. Tokenization is used to replace sensitive data with derived data, ensuring the security of personal data.  Registrants can use a PhilID card number (PCN) or PSN alias, accompanied by a one-time PIN or biometric data for authentication. The PSN is not stored in public or private databases, but those organizations may store certain tokens to verify the uniqueness of the owners or to reconcile data with other agencies as required by law.