| Author | Message | ||
     Jane Doe (Unregistered Guest) Unregistered guest Posted From: h007.nat064107011.morainevalley.net |
I have read that flour mixed with black magic marker will pick up a finger print. I have also read that cinnamon will pick up a finger print. Do they work as well on getting fingerprints from paper as disulfur dinitride? How can you transfer a fingerprint found on a piece of paper, to a fingerprint sample card? Wont the clear tape to pick up the sample stay stuck to the original paper? | ||
| Michael Stockel (Unregistered Guest) Unregistered guest Posted From: 104.243.155.164 |
Possibly they were wearing gloves. There's no way that the print could bleed through. | ||
| Mark (Mrmarkgr) Member Username: Mrmarkgr Post Number: 2 Registered: 08-2016 |
What about if the paper is copied/scanned digitally. Would there be a way for law enforcement to see the prints from the paper once it is in digital form? | ||
| Angel Vazquez (Unregistered Guest) Unregistered guest Posted From: fmdmzpr04-ext.fm.intel.com |
I am also curious if prints can be lifted from regular printing paper that is at least a year old. If so does anyone know of places that could do this for you? | ||
| shannondamron (Unregistered Guest) Unregistered guest Posted From: 69-36-195-52.cot.net |
I have heard many theories relating to Fingerprints left on paper, would fingerprints be present on a piece of paper if it was mishandled and not properly stored for analysis 2 years after it was collected? Example: A piece of paper was collected and stored in a file cabinet in an office or some other "improper" vessel for a duration of 2 or more years? | ||
| Jessica Coates (Unregistered Guest) Unregistered guest Posted From: s0106001c10204fb1.nb.shawcable.net |
How long would a fingerprint/palm print, or a print from any other surface of the hand last on standard lined paper, and would it be possible to lift and separate overlapping fingerprints? | ||
| Alex Wiedzmin (Unregistered Guest) Unregistered guest Posted From: host.mckesson.com |
According to the recent research fingerprints can be recovered from difficult surfaces such as paper using disulfur dinitride, which will turn the fingerprint brown no matter what surface it is on. | ||
| Barbara Anselmo |
Thank you Graham for your response. This was helpful. I stand corrected on my firm thoughts that fingerprints should have without doubt been present. Thank you again for responding | ||
| Graham Ford |
The defense explanation holds some water, but not much. If a persons hands were clean is not necessarily relevant. Clean hands can leave very good prints on the substrate touched as the sweat is not blocked from the pores by dirt or grease etc. If the hands had been wiped with a handkerchief, rag or tissue paper etc, then there is minimal sweat on the surface of the skin to leave the required deposit on the paper. Paper is an excellent substrate on which to develop latent prints as it is generally absorbent (thermal papers can be problematical). The sweat deposit from the donor is absorbed into the fibers of the paper and is generally protected. Whether the sweat deposit can be revealed by latent development techniques to disclose sufficient quantity and clarity of information to identify back to the donor will depend on a vast amount of variables. Such as, paucity of latent deposit, does the donor exude sufficient acids and oils that would react with the processing method employed, was the paper well handled by others before being handled by the donor you are trying to identify, was the paper collected and preserved using the correct methods for later laboratory examination, etc., etc. From your posting you state that (during such a stressful time such as a kidnapping their hands would likely perspire somewhat and leave some mark). This would indicate that you may have a bias (I am not sure of course) and believe that the parents are in someway implicated in the crime. Of course it could also mean that the stress was caused by the loss of their child. Whether they are guilty or not, some or all of the above mentioned factors may apply, as well as other explanations i.e., if the paper was previously well handled by other parties and subsequently handled by the donors (in this case the parents), their sweat deposit could be masked by the sweat deposits already present on the paper. It should be no surprise for any fingerprint expert; that a persons prints may not developed sufficiently to individualize, after they had definitely touched the questioned item. As you say, they may have left some mark on the paper, but if it was not sufficient to react with the processes employed and contained insufficient identifiable ridge characteristic detail to identify, then no firm conclusion can be made. I was taught back in 1971, that when you examine any items for latent prints, you should always HOPE to find prints, never EXPECT to find them. Just because someone has touched an item, does not mean that you can prove it from a fingerprint perspective. | ||
| Barbara Anselmo |
I have a question that I hope someone can help me with I follow the JonBenet Ramsey murder case and the evidence states that despite the fact that both parents handled the note, NO fingerprints from them were found. The explanation given by those who defend the parents are that their hands were clean and paper does not hold fingerprints well I disagree as I would also suspect that during a stressful time such as a "kidnapping" their hands would likely perspire somewhat and leave some mark on paper. I would appreciate any feedback on this subject. Thanks Barbara |
