There are two types of handwriting analysis - "Graphology" and forensic handwriting analysis. Graphology claims to be able to derive personality/psychological t

There are two types of handwriting analysis - "Graphology" and forensic handwriting analysis. Graphology claims to be able to derive personality/psychological traits of the penman, and is just for charlatans. But, forensic handwriting analysis is "real" and useful, for determining if a known-author handwriting sample matches an unknown-author handwriting sample.