#WeirdWordoftheDay Skies!

dactylography

Pronunciation: /ˌdæktəˈlɑgrəfi/
Meaning: 1) The science of using fingerprints to uniquely identify people; 2) The study of finger rings.
Origin: From dactylo- +‎ -graphy.

Usage: He was a leading expert in dactylography after a lifetime of study.