1. What are the requirements for judicial authentication of documents? The requirements for judicial authentication of documents include: in principle, the original, the signature or handwriting in the sample materials and the signature or handwriting in the inspection materials should be in the same period, and whether there is an indentation of the previous page on the suspicious paper materials should be inspected. Judicial authentication of documents mainly includes: handwriting authentication, stamp authentication, document formation time authentication, document making tools authentication, forged documents authentication, paper and pen and ink composition authentication, etc. Second, the matters needing attention in the identification of judicial authentication documents are what kind of judicial authentication documents are, mainly including: handwriting authenticity identification, stamp authenticity identification, document formation time identification, document making tool identification, forged document identification, paper and pen and ink composition identification, etc. The specific identification is as follows: Handwriting identifies whether the signature handwriting or writing handwriting on suspicious documents is written by the parties. Requirements: 1. In principle, it is the original, if it is really impossible to provide the original. 2. The sample materials (signature handwriting or written handwriting materials of the parties) shall be original in principle. The signature or handwriting in the sample materials and the signature or handwriting in the inspection materials should be in the same period (the same year, or a difference of two years is appropriate, under special circumstances, a specific analysis can be made according to the specific circumstances of the case). 3. The handwriting in the sample materials and the handwriting in the inspection materials must have the same handwriting. In principle, the more the same handwriting, the better. Seal seal is used to identify the authenticity of the seal seal on suspicious documents. In the identification, it should be noted that: 1. The inspection materials should be original in principle, and the seal seal should be clear and complete; 2. The sample materials should be original, and the seal seal seal in the sample materials and the seal seal seal seal in the inspection materials should be in the same period (the same year, or a difference of two years is appropriate, and under special circumstances, a specific analysis can be made according to the specific circumstances of the case). The seals in the sample materials should be clear and identifiable, and it is best to provide more than three seals in the sample materials. Alter, add to identify whether there are alterations or additions to the handwriting or writing content on suspicious documents. Requirements: The inspection materials must be original. Printing, printing, copying and faxing, etc. Identify suspicious printing, printing, copying and faxing documents. Requirements: 1. Inspection materials must be original. 2. There should be corresponding sample materials of the same period. The time sequence of documents identifies the printing handwriting, the writing handwriting and the time sequence of seal printing on suspicious documents to judge the authenticity of the documents. Requirements: The inspection materials must be original. The formation time of seal marks identifies the formation time of seal marks on suspicious documents, which is a difficult identification case in document retrieval. Requirements: 1. Inspection materials and samples must be original. 2. The sample size is sufficient. Portrait recognition is used to identify and identify suspicious portraits. Requirements: 1. The portrait in the inspection material is best to take a frontal photo with complete facial features, and the portrait cannot wear sunglasses. 2. The portrait in the sample should be a clear front photo with complete facial features. 3. Don't convert the storage format and compress the electronic photos of samples and samples. Invisible writing materials are used to check whether there is an indentation written on the previous page on the suspicious paper materials. Requirements: Do not contaminate, take it directly by hand, do not squeeze it, and put it in a material evidence bag for inspection. Judicial authentication of documents is a very rigorous process, which involves evidence and documents that need to identify criminal facts. Therefore, every link must be prepared correctly when conducting authentication. If mistakes occur, it will cause great difficulties to the trial of the whole litigation case. In general, all documents issued should be very clear originals and cannot be replaced by photocopies.