A lay person can take the witness stand and identify the handwriting on a document:

Question

Quizplus · Accepted Answer

A lay person can identify handwriting on a document if they are familiar with the handwriting of the person in question. They do not need to have seen the person write the entire document or have been familiar with their handwriting for a specific amount of time. However, their testimony may not be as credible as that of a forensic handwriting examiner.

A Lay Person Can Take the Witness Stand and Identify