The fingerprint identification of forged IOUs should adopt special technology to identify and evaluate the similarities and differences of fingerprints. The procedures of fingerprint identification are divided into preliminary inspection, individual inspection, comparative inspection and comprehensive evaluation. After identification, the same purpose is achieved, thus providing evidence for criminal proceedings.

legal ground

Article 2 17 of the Procedures for Handling Criminal Cases by Public Security Organs.

In order to determine some characteristics, injuries or physiological conditions of victims and criminal suspects, people can be examined, and biometric information such as portraits and fingerprints can be extracted and collected according to law, and biological samples such as blood and urine can be collected. If the victim dies, the identity of the victim shall be determined by means of identification of the victim's close relatives and biological examination.

If a criminal suspect refuses to inspect, extract or collect, if necessary, with the approval of the person in charge of the case-handling department, the investigators may force the inspection, extraction and collection.

Women's physical examination should be conducted by female staff or doctors.

The inspection records shall be signed by the investigators, inspectors, inspected personnel and witnesses who participated in the inspection. If the inspected refuses to sign, the investigator shall indicate it in the record.