Public security portrait comparison is used in many scenarios, such as access control systems, online remote account opening, query machine and other systems and applications, through the use of the interface can effectively identify the false account, false ID card, fraudulent use of other people's ID cards for violations.

The public security big data portrait comparison system is based on various types of data accumulated by public security informatization, with the portrait algorithm engine as the technical support, relying on the "public security cloud", to build a data fusion, resource ****sharing "cloud" portrait database, which can achieve The national scope of the portrait of the automatic comparison and error correction.