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Thread: How to fake fingerprints

  1. #1
    How to fake fingerprints?

    In order to fake a fingerprint, one needs an original first. Latent fingerprints are nothing but fat and sweat on touched items. Thus to retrieve someone elses fingerprint (in this case the fingerprint you want to forge) one should rely on well tested forensic research methods. Which is what's to be explained here. (Figure 1).


    Figure 1: Fat residue from fingerprint

    A good source of originals for our counterfeits are glasses, doorknobs and glossy paper. The standard method of forensic research makes them visible: Sprinkling it with colored powder, which sticks to the fat (Figure 2).


    Figure 2: Visualisation with graphite powder

    Another solution involves Cyanoacrylat, the main ingredient of superglue. A small amount thereof is poured into a bottlecap, which is then turned upside down and put over the fingerprint. (Figure 3).


    Figure 3: Visualisation with superglue

    The Cyanoacrylat gasses out and reacts with the fat residue to a solid, white substance (Figure 4).


    Figure 4: Print after Cyanacrylate processing

    The further treatment involves scanning/photographing (Figure 5) and a bit of graphical refurbishment (Figure 6).


    Figure 5: Digitalising the print


    Figure 6: Brushing up the image of the print

    The goal is to get an exact image of the fingerprint, for further use as mold, out of which the dummy is made. The easiest way is to print the image on a transparency slide (the ones normally used for an overhead projector) with a laser printer. The toner forms a relief, which is later used similar to letter press printing. Wood glue is suitable for producing the dummy (Figure 7)


    Figure 7: Wood glue for the dummy

    A small dash of glycerene may be used to optimize humidity and workability. After thorough mixing, the dummy gets coated with a thin layer of the compound (Figure 8,9).


    Figure 8: Covering the dummy with wood glue


    Figure 9: Glue layer on the printout

  2. Lounge   -   #2
    After the glue has dried (Figure 10), it is pulled off the foil (Figure 11) and is cut to finger size.


    Figure 10: Hardened glue


    Figure 11: Dummy, ready to use

    Theatrical glue is used to glue the dummy onto the own finger (Figure 12).


    Figure 12: The new identity is ready!

    The new identity is ready!

    biometrie(at)ccc.de

  3. Lounge   -   #3
    enoughfakefiles's Avatar Ad ministrator
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    Just use someone elses hands.

  4. Lounge   -   #4
    lynx's Avatar .
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    Quote Originally Posted by 99%
    Another solution involves Cyanoacrylat, the main ingredient of superglue. A small amount thereof is poured into a bottlecap, which is then turned upside down and put over the fingerprint.
    Also known as "How to get a bottlecap stuck to your finger".
    .
    Political correctness is based on the principle that it's possible to pick up a turd by the clean end.

  5. Lounge   -   #5
    bujub22's Avatar THE GREAT
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    this is like B/E 101

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    DarthInsinuate's Avatar Died in battle
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    can't you just wear gloves?
    The Sexay Half Of ABBA And Max: Freelance Plants

  7. Lounge   -   #7
    bujub22's Avatar THE GREAT
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    Quote Originally Posted by DarthInsinuate
    can't you just wear gloves?
    ya but a true crimnal would go fo the gusto and change them permantly!
    by jus using a acid base substance and burn the prints diffrent lil by lil
    kinda like when u scar yourself that part of the skin does'nt grow back the same but with fingerprints they can thats y you either hav to hav them laser'd or burned ...gloves are good but they also can be shit cuz evidence is left in the glove ..sweat, tissue from your skin also if anyone found it.
    best bet to me is earse your fingerprint by burning them diffrent

  8. Lounge   -   #8
    manker's Avatar effendi
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    Quote Originally Posted by bujub22
    ya but a true crimnal would go fo the gusto and change them permantly!
    by jus using a acid base substance and burn the prints diffrent lil by lil
    kinda like when u scar yourself that part of the skin does'nt grow back the same but with fingerprints they can thats y you either hav to hav them laser'd or burned ...gloves are good but they also can be shit cuz evidence is left in the glove ..sweat, tissue from your skin also if anyone found it.
    best bet to me is earse your fingerprint by burning them diffrent
    Maybe not robbing anywhere would also work




    Hi, Joob - Dave wanted me to ask about teh gepwear
    Last edited by manker; 05-19-2005 at 01:10 PM.
    I plan on beating him to death with his kids. I'll use them as a bludgeon on his face. -

    --Good for them if they survive.

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    Gripper's Avatar Dexter's Apprentice.
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    you could varnish your finger tips that might work,2pairs of surgical type gloves works,apparently they can still get a print through one?Too much watching of CSI

    All spelling mistakes and grammatical errors in my post's are intentional.

  10. Lounge   -   #10
    bujub22's Avatar THE GREAT
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    Quote Originally Posted by manker
    Maybe not robbing anywhere would also work




    Hi, Joob - Dave wanted me to ask about teh gepwear
    i aint drawn shit since life threw a curve ball at me
    but i swear to make some more when shits better

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