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Kirlian photograph hologram identifier

Not your fingerprint, but the effect of your finger.
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A combined Kirlian photograph and hologram of an appendage of a person to be used as a unique identifier for security purposes. Similar complex multilayer texture recognition techniques as those used to discern fingerprints could be used (Efficient Texture Comparison) to codify the holographic result of the Kirlian photograph. The result is a kind of super-fingerprint that can’t easily be faked by using adhesive or other imprinting methods.
Ian Tindale, Nov 17 2015

https://en.wikipedi...Kirlian_photography [Ian Tindale, Nov 17 2015]

https://en.wikipedia.org/wiki/Holography [Ian Tindale, Nov 17 2015]

https://en.wikipedia.org/wiki/Touch_ID [Ian Tindale, Nov 17 2015]


       Don't Kirlian auras change over time ?
FlyingToaster, Nov 17 2015

       The stochastic corona discharge is always varying anyway, even during the exposure. The conventional (?) Kirlian photograph as we are familiar with it (if you indeed ever were) is essentially a contact print. In other words, it’s like when you’re learning photography in the darkroom and you place objects onto the photographic paper and expose light to it. There’s no focusing involved. There’s only recording of the shadow falling onto the emulsion.   

       In Kirlian photography, there’s no shadow or external light source, but the object produces the light radiation itself through corona discharge. The length of time of a typical photo paper or film emulsion exposure involves a “summing” effect of the moving around of the corona discharge energy as light exposure. If it moves from a specific area, it registers slightly less, and if it moves back again it builds up the exposure in that area. You’re seeing a summed aggregate result.   

       It’d be like taking a photo of a candle flame, except that instead of a brief exposure, imagine you’re shooting a ten second exposure to the flame. Any flicker will cause it to register a feint image in the moved position, but as it spends the majority of time in the central flame position, that part will be denser. If the flame is in a constant wind, the density is spread around, looking like but not actually being blurred (more statistically ‘distributed’ (you could think of it as being distributed across phase space)) and if there’re no disturbance, the density is gathered around where you see the flame, so it’ll be more flame-shaped.   

       Same with Kirlian photos — it’s a long exposure that registers the statistic distribution of stochastic corona discharge effects, and collapses all that time continuity into one still frame.   

       Similarly, a Kirlian photograph is an intersection of a ‘plane’ of imagery — there’s no focus or distance differences. With holography you would record the spatial differences, and as such, it would not be merely a planar image, but rather, one with three dimensional discrimination. It would still be temporally-collapsed, though, but the resulting texture complexity would be statistically characteristic of the emitter used as a subject.
Ian Tindale, Nov 18 2015

       sorry, I had a snowball in my ear; could you repeat that ?
FlyingToaster, Nov 18 2015

       In summary:   

       It can't work (first 4 and a half paragraphs).   

       But it will work (last half paragraph).   

       [IT] Do you actually have evidence that there is any consistency of coronal discharge? Especially if something like fingertip contact pressure (and thus contact area) is slightly inconsistent?
MechE, Nov 18 2015

       No, but with adequate funding…   

       Oh, and it doesn’t really require contact, or at least, not in the squashing sense — as it’s a holograph of a three dimensional object.
Ian Tindale, Nov 18 2015

       My understanding was that Kirlian photography only worked with contact, because it's the discharge of the electricity from the object into the film that actually produces the image.
MechE, Nov 18 2015

       Some fingerprinting kits were banned because they used dangerous forms of asbestos.
travbm, Nov 18 2015


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