Can forensics lift fingerprints from paper(A4/Envelopes etc)?

Answer 1

Yes most definitely.
You only have to watch any police program to see the blackmailer or Ransom taker sending the letter wearing gloves !lol

Answer 2

If the prints are there in the first place, then yes. There are zinc powders, pva glues and dyes which can be used for this. Also, in some cases, saliva and sweat can be used for DNA elimination - although it is very unlikely a full DNA sample will be collected from such.

What you need to do is use self sealing envelopes and wear rubber gloves while handling the paper, photocopy the thing you are sending at a public copying facility and send the photocopy. This means they ink used will be harder to trace back to you - also type the original in a common typeface like arial or times new roman. Post the item from a town you have no connection to - preferably a major city. Then burn the original and the gloves.

Answer 3

Yes they fluoresce when illuminated with an argon laser

Abstract
Previous articles in this journal [1,2] have described the detection of latent fingerprints by argon-ion laser. Basically, the procedure involves illumination of the exhibit under scrutiny with the light from a continuous-wave argon-ion laser followed by observation and photography of the luminescence from the latent print. The luminescence can be inherent fingerprint luminescence, fluorescence arising from treatment of the print with fluorescers (fluorescent dusting powders or fluorescent dyes) [1-3], or fluorescence resulting from chemical treatment of latent prints. Such chemicals (fluorescamine, o-phthalaldehyde, p-dimethylaminocinnamaldehyde) react with fingerprint material in a manner analogous to ninhydrin to form fluorescent reaction products [2]. Thus, laser detection of latent prints takes on a wide range of applicability.

Answer 4

Yes

Answer 5

Not always.

Fingerprints are minute traces of oils left behind through skin contact. If it is very cold or your hands are extremely dry the NO you cannot get prints as you don't leave any - or just minimal 'partials'.

For a good print to be lifted from paper, it is idealy a glossy finish and handled firmly.

Answer 6

1

Answer 7

Yes using a gas form of superglue. The glue as a gas form adheres to the minute particles of sweat produced by the million of glands in the hands, it is this sweat that is responsible for creating a fingerprint. When the gasious glue sticks to the sweat particles it increases the sweat masses depth, allowing then for software to scan, thus recognising and producing a 3D picture. Paper is also very porous so it is perfect for maintaining sweat.

Answer 8

yes they can Forensics has lifted prints from envelopes dating back to the world wars to capture war criminals it was recently on forensic files and shows like that

Answer 9

Yes and they can do a dna check on a persons saliva if they licked the envelope to seal it

Answer 10

Easily