Legal analysis: Yes. The identification results need to be consulted by a professional identification agency. The consequences of signing or fingerprinting on blank paper are very serious, especially if it is used by criminals for deception, impersonation, forgery, etc., which will cause legal and economic consequences and losses, such as counterfeit power of attorney, fake loans or IOUs. , issue certificates, etc.

Legal basis: Article 54 of the "Criminal Procedure Law of the People's Republic of China" The people's courts, people's procuratorates and public security organs have the right to collect and obtain evidence from relevant units and individuals. Relevant units and individuals should truthfully provide evidence. Physical evidence, documentary evidence, audio-visual materials, electronic data and other evidentiary materials collected by administrative agencies in the process of administrative law enforcement and case investigation can be used as evidence in criminal proceedings. Evidence involving state secrets, commercial secrets, and personal privacy shall be kept confidential. Anyone who forges, conceals or destroys evidence, no matter who they belong to, must be held accountable by law.