Handwriting from 15 years ago can be identified. The object of handwriting examination is various handwriting evidence in the case. By comparing and studying personal writing habits and handwriting characteristics, and comparing two handwritings for identification, even handwriting from 15 years ago can still be identified. The general characteristics of handwriting include the proficiency, size, spacing, inclination, coherence, uniformity, type and pressure of the handwriting, etc.; the individual characteristics of handwriting include the strokes, proportions, stroke order, writing style, and punctuation marks. Writing, etc.

"General Principles of Forensic Authentication Procedures"

Article 28

The judicial appraisal institution shall have thirty working days from the date when the judicial appraisal power of attorney takes effect. Complete the identification within. If the appraisal matters involve complex, difficult or special technical issues or the appraisal process takes a long time, the time limit for completing the appraisal can be extended with the approval of the person in charge of the institution. The extension time limit shall generally not exceed thirty working days. If the appraisal time limit is extended, the client shall be informed promptly. If the forensic appraisal agency and the client have other agreements on the appraisal time limit, the agreement shall prevail. The time required to supplement or re-extract identification materials during the identification process will not be included in the identification time limit.