The so-called "all-in-one card" is to realize intelligent management of many different functions on the same card. In essence, it is a special information management system composed of cards, electrical appliances and upper management software. Its core content is to realize the standardization and automation of information resource management from the generation, collection and transmission of business data to summary analysis by using the card as a specific physical medium. At the same time, as a part of enterprise information management, enterprise card is closely related to enterprise ERP system, financial system and HR system.