Defeating fingerprints
Forwarded message:
With regards to filling in your own card, what about using a disappearing ink?? Then your prints would disappear! You could even do your name, right infront of them, and it would disappear, leaving these anynonomous prints behind!!
While the ink does become transparent/translucent I am shure the FBI chem lab won't have a problem finding traces of the chemical. This would make for jim dandy evidence in court.
Or you could make an inkpad that is damp with sodium hydroxide (lye) instead of ink. That way, you could lightly roll your fingers in it, like it was ink, and then wait a minute, and wipe it off. That way, the only skin being eaten away, would be the ridges of the fingerprints. Do this enought times, and the rigdes will end up the same height as the valleys, and will then essentially be flat.
Burglars and safecrackers sand the ridges off. Jim Choate
Forwarded message:
With regards to filling in your own card, what about using a disappearing ink?? Then your prints would disappear! You could even do your name, right infront of them, and it would disappear, leaving these anynonomous prints behind!!
While the ink does become transparent/translucent I am shure the FBI chem lab won't have a problem finding traces of the chemical. This would make for jim dandy evidence in court.
Or you could make an inkpad that is damp with sodium hydroxide (lye) instead of ink. That way, you could lightly roll your fingers in it, like it was ink, and then wait a minute, and wipe it off. That way, the only skin being eaten away, would be the ridges of the fingerprints. Do this enought times, and the rigdes will end up the same height as the valleys, and will then essentially be flat.
Won't work. Regular old soda lye is not really that corrosive to the skin. I've handled plain lye many times and only hurts a little if a grain gets up my fingernail.
Burglars and safecrackers sand the ridges off.
This sounds like it'd work, but quite tedious.
Jim Choate
-- God grant me the serenity to accept the things I cannot change, the courage to change the things I can, and the wisdom to know the difference
ON
On Tue, 14 May 1996, Be Good wrote:
Burglars and safecrackers sand the ridges off.
This sounds like it'd work, but quite tedious.
Belt sander and a light touch.
I'm going to try this sanding experiment sometime. When I get around to it, I'll post the results here. (pressing hard with inkpad and paper) Shellac or epoxy glue does NOT work, if the thickness is at all managable. Tried it, The ridges always find a way to get through. It also provides a weaker bond to dry skin than you'd expect. The thicker the more likelihood of peeling off. Even Krazy Glue. (The UL BS is false.) -- Serenity, Etc.
On Fri, 17 May 1996, Dave Harman wrote:
Shellac or epoxy glue does NOT work, if the thickness is at all managable. Tried it, The ridges always find a way to get through. It also provides a weaker bond to dry skin than you'd expect. The thicker the more likelihood of peeling off. Even Krazy Glue. (The UL BS is false.)
Use krazy glue gel. Works wonderfully for me.
-- Serenity, Etc.
--- My preferred and soon to be permanent e-mail address:unicorn@schloss.li "In fact, had Bancroft not existed, potestas scientiae in usu est Franklin might have had to invent him." in nihilum nil posse reverti 00B9289C28DC0E55 E16D5378B81E1C96 - Finger for Current Key Information Opp. Counsel: For all your expert testimony needs: jimbell@pacifier.com
Shellac or epoxy glue does NOT work, if the thickness is at all managable.
Not that random playing with carcinogenic chemicals is a good idea, but... I've found that if you use just one reagent from epoxy glue, the collagen in your skin will disolve. You can sculpt it into whatever shape you want, and it will stay that way for an hour or so. I don't remember if it was the resin or the hardener though. This was regular 5 minute epoxy.
participants (5)
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Black Unicorn -
Jim Choate -
qut＠netcom.com -
SINCLAIR DOUGLAS N -
snow