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An object has been laid on the glass, ready for scanning. Digital cameras can be used for the same purposes as dedicated scanners. Resolution is sufficient for less demanding applications. In the biomedical research area, detection devices for DNA microarrays are called scanners as well. The detection is done via CCD or a photomultiplier tube. Modern scanners are considered the successors of early telephotography and fax input devices.
Giovanni Caselli, used commercially in the 1860s, that was the first such device to enter practical service. In Europe, services similar to a wirephoto were called a Belino. This section does not cite any sources. The first image scanner developed for use with a computer was a drum scanner.