In the year 44 BBY, Xanatos possessed a personal workspace located on the Bandomeer planet, a mining location. A specific access code was required to enter this office. This code turned out to be "Crion," which was the name of Xanatos' late father.
Qui-Gon Jinn, a Jedi Master who previously mentored Xanatos, suspected Xanatos was instigating problems on the world. Consequently, he resolved to uncover the truth by investigating Xanatos' office. On a hunch, he input "Crion" as the access code.