Legal analysis: Generally speaking, name, gender, date of birth, ID number, place of birth, place of residence and family members can be found in the public security system. In addition, if a crime is involved, you can check the driver's license and hotel registration records of the suspect. At present, the management of public security network is very strict, and it is necessary to have a specific digital certificate to search information online. As for personal property information, loan information, communication information, etc. Can't find it on the public security information network. Only the police who handle this case can investigate through the banking and communication departments. These investigations also need the approval of the head of the county-level public security department to handle criminal cases.

Legal basis: People's Republic of China (PRC) Identity Card Law.

Article 6 The pattern of resident identity cards shall be formulated by the public security department of the State Council. Resident identity cards are uniformly produced and issued by public security organs. The resident ID card has two functions: visual reading and machine reading. The contents of visual inspection and machine reading are limited to the items specified in the first paragraph of Article 3 of this Law. The public security organ and its people's police shall keep confidential the personal information of citizens known in the production, distribution, inspection and seizure of resident identity cards.

Thirteenth citizens engaged in related activities, need to prove their identity, have the right to use the identity card to prove their identity, the relevant units and their staff shall not refuse. The relevant units and their staff members shall keep confidential the personal information of citizens recorded in the resident identity cards obtained in the course of performing their duties or providing services.