A certificate category refers to a legally binding document stipulated by a country or region in terms of administrative management and legal system to prove a person's identity and identity information. Certificate category is an important identity, which can confirm the identity of citizens and has high security and credibility. The use scope and priority of different certificate categories are different, so it is very important to understand the provisions and use methods of certificate categories.

Different types of certificates are set to meet the requirements of identification in different occasions. For example, the ID card is the basic proof of our country's citizenship, which can be used for identity authentication in public places, passport application, various certificates, taking public examinations, etc. Passport is an international document, which is used for cross-border travel and identity authentication in the country of entry. In addition, there are some types of documents specially used for specific occasions, such as driver's license, military officer's card, student's card, etc.

With the development of science and technology, more and more countries are trying to use new certificates such as digital ID. Digital identity certification is a kind of identity certification method based on encryption technology, digital signature and other technical means. By digitally storing, managing and transmitting citizens' identity information, more efficient, safe and convenient identity identification and authentication can be realized. Digital identification is the future trend, and it will play an increasingly important role in the future development.