Handwriting identification is based on the characteristics of people's writing skills and habits, as well as the reflection in writing and painting to identify the author's expertise.
The main task is to verify whether the handwriting on the documentary evidence is the same person's handwriting and whether the handwriting on the documentary evidence is the suspect's handwriting through handwriting identification.
Handwriting identification can not only detect normal handwriting, but also check handwriting changes (including writing posture, writing tools, writing boards, etc. ), deliberately camouflage handwriting (including left hand handwriting and ruler handwriting), imitate handwriting and painting handwriting. When the same person writes with the same pen, the characteristics of handwriting can also enrich the basis for identifying the author.