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Fingernails Next Biometric

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The team has only managed the feat on nail clippings so far,
but they hope the process could one day be used to securely carry
information on fingertips.Yoshio Hayasaki of the University of
Tokushima and his colleagues said a single fingernail could accommodate
approximately 800 kilobytes of data. That would not provide room for a
high-resolution photo, but would be enough to store basic
identification information.Hayasaki and his team achieve the
feat by using a laser that delivers very short pulses of infrared light
onto a finely focused spot, they report in Optics Express1. When
the nail is illuminated with blue laser light to excite fluorescence,
recorded dots appear brighter than the material surrounding them,
allowing the information to be read under a microscope.Because
it is possible to adjust the depth of the writing, they say several
layers of information can be superimposed within a single slab.

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SEN Newshttps://sen.news
Security & Electronics Networks - Leading the Security Industry with News and Latest Events. Providing information and pre-release updates on the latest tech and bringing it all to you daily. SEN News has been in print for over 20 years and has grown strong as a worldwide resource in digital media.

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