Fingerprint
noun
The family crest on your finger? That's just your fingerprint. It can be used to identify you, so it's pretty much the same as your own personal family crest.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
ドアノブの指紋を綺麗に拭き取った。
The fingerprints on the doorknob were completely wiped off.