But a digital scan she emailed showed signs of real ink on paper.

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For women with dense breasts, it's best to get a digital scan, which is more accurate, says Karla Kerlikowske, a professor of medicine at the University of California in San Francisco.

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More cleverly, a feature Apple calls iTunes Match will let a user scan their music library to unlock access to high quality digital recordings of the music that can be downloaded to any of their devices.

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You can just scan someone's e-mail, or create a digital repository that someone has access to.

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Also, such lasers can scan a much broader field of view than a laser in a digital microscope.

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The card will likely take the place of your driver's license and will store at the very minimum your name, birthdate, sex, ID number, a digital photograph and address, with the possibility of additional data such as a fingerprint or retinal scan.

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The solution: Smith advocates an optical scan system where voters fill out a paper ballot that's subsequently scanned to create a digital vote.

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Shroud 2.0 allows users to zoom in on any part of the high-resolution digital scan of the shroud (first produced in 2008) and download more detailed close-ups for a fee.

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