With the use of technology and digital files increasing daily, do you think it is necessary for experts to be trained in document and handwriting analysis

Yes.

Explanation:

In this case, it is believed the expert that is being referred to as an expert witness is a "Forensic document examiner. The forensic document examiner is an expert in determining the authenticity or credibility of a document by analyzing the originality of the document, such as handwritings signatures, a history of the documents, etc.

Hence, despite the use of technology and digital files increasing daily, it is still necessary for experts to be trained in document and handwriting analysis because they need to understand the originality of documents and signatures that involve the computerized handwriting of individuals.