National identification refers to a system used by governments to uniquely identify their citizens. This often involves issuing a national ID card or passport that contains personal information such as name, date of birth, and a unique identification number. These documents help in verifying identity for various purposes, including voting, accessing government services, and traveling. The concept of national identification varies by country. Some nations have a mandatory system where citizens must obtain a national ID, while others may have voluntary options. The use of national identification can enhance security and streamline administrative processes, but it also raises concerns about privacy and data protection.