Testator is generally based on the writing habits at that time, and people's writing habits are constantly changing to improve their writing ability. To do handwriting identification, you need a testator. Your handwriting is better around the time of writing your will. According to the testator's habits, it can provide reference for identification. For example, the testator has the habit of keeping a diary and keeping an account of family expenses. Handwriting that provides comparison and contrast.

Specification for handwriting identification in judicial expertise

3.2. 14 handwriting: suspicious handwriting that needs to be identified.

3.2. 15 sample handwriting: handwriting used for comparison and comparison.

3.2. 19 Conditional handwriting: It is formed when the writer writes in an abnormal physiological and psychological state, or in an abnormal writing environment and conditions.

Abnormal handwriting, such as old people's handwriting, special morbid handwriting, handwriting formed by special writing tools, etc.