chironomic
/ˌkaɪrənɒmɪk/Definitions
1. adjective
of or relating to the study of the movements of the fingers on the surface of a writing instrument, especially to determine the identity of a writer by the characteristics of handwriting
“The forensic expert used chironomic analysis to identify the writer of the suspicious letter.”
2. noun
a study or analysis of handwriting, especially to determine the identity of a writer
“The chironomic analysis revealed that the letter was written by the suspect.”