Legal analysis: you can apply for fingerprint identification. Fingerprint identification refers to the use of specialized technology to identify and evaluate the similarity and difference of fingerprints. According to the Provisions of Public Security Organs on Handling Criminal Cases and the Rules of Criminal Technical Appraisal, fingerprint appraisal is one of the important contents of criminal technical appraisal. It is based on the fact that people's fingerprints are different and basically remain unchanged for life. The procedures of fingerprint identification are divided into preliminary inspection, individual inspection, comparative inspection and comprehensive evaluation.

Legal basis: Article 490 of the Civil Code of People's Republic of China (PRC). If the parties enter into a contract in the form of a contract, the contract shall be established when the parties sign, seal or press their fingerprints. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it.