Forensic imaging is the process of creating exact, verifiable copies of data stored on hard drives and other electronic storage devices. In the case of computer hard drives, forensic images are bit-for-bit copies of all data stored on such drives. For targeted collections, forensic images are verifiable exact copies of the selected files. For smart phones, forensic images are verifiable copies of the maximal amount of data supported for copying by the associated phone models and operating systems, and as such work performed on phones often is more accurately referred to as forensic collections.