What exactly does having someone's fingerprints gain you in financial security? So Sister embezzles $1m by wiring it to Switzerland... now what? What do those fingerprints get you?
They get you the chance to see if she embezzled at her last job. Somebody with a conviction for any white-collar crime shouldn't work as a programmer for a financial institution. Checking fingerprints is the most reliable way of performing a criminal background check.