Government of Ontario

Physical Sciences Section

Centre of Forensic Sciences logo

Centre of Forensic Sciences

Physical Sciences Section


Documents are examined to determine whether they are authentic, if they have been altered and how they relate to a person, thing, event or time. They can be authenticated by comparing the pens, pencils, inks, paper and printing processes used to produce them and by examining them to detect and decipher erasures, indentations and alterations. Comparing handwriting and signatures can identify or eliminate a particular writer.