As a police corruption scandal rocks the city, the Baltimore Police Department will now mandate fingerprint scans for officers clocking in and out of shifts. Last year, the department budgeted $US16 million ($20 million) for overtime, yet spent $US44.9 million ($57 million). Testimony during the ongoing corruption trial revealed an informal overtime system wherein officers who brought in large hauls of guns or drugs were rewarded with off-the-books time off.