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The various fine dusts used in detecting fingerprints, are chosen such that they will adhere to the oils present in the fingerprints. It is brushed on to the target surface with a brush made of fine hair. This tool should not apply a force that would destroy or distort the fingerprint.
In the field, the print, after demonstration, is lifted on adhesive tape, and this 'replica' is what is examined.
There are other types of detection equipment other than powders.
The elements of a fingerprint that are chosen to analyze are distinct features, such as bifurcations, loops, whorls and similar. These will be counted and their position determined with relation to other features. A match of three features would be have a very low confidence, a five-point match somewhat better, and a seven-point match would be good. But the target fingerprint is often of poor quality.
Indeed, even expert fingerprint readers; when presented with some real fingerprints; do not perform as well as is commonly presented.
The fingerprints of pre-puberty juveniles commonly do not have the oils upon which these tests depend. So children's tests are difficult.
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What is the best way to uncover a fingerprint in a crime scene?
lightly dust with grafite
What is a better technique than using Iodine to detect a fingerprint on a frame?
Charcoal dust is usually effective to detect fingerprints. If not you could try Fingerprint spray.
What is better than iodine to show up fingerprints?
Especially not charcoal dust the fingerprint doesn't come out right and it smudges so Fingerprint spray is the best solution!
How do police take fingerprints from a crime scene?
Police use special tools, like fingerprint powder, brushes, and lifting tape, to collect fingerprints from surfaces at a crime scene. They dust surfaces with powder to reveal the print, then carefully lift it with tape and transfer it to a fingerprint card for analysis and comparison.
What do you use to vote with in south Africa?
Fingerprint
What do you use the cup on spyisland in poptropica for?
The fingerprint....You use it to get in the BAD HQ.
Who do you give the fingerprint to on spy island?
you do not give it to anyone you go to the B.A.D site and pass the lasers and use it for the fingerprint code.
What type of technology does fingerprint scanner use?
The computer
Where do you get extra security for your iPad?
Use touch/fingerprint.
How is fingerprint investigation done?
Fingerprint investigation involves identifying and analyzing the unique patterns present in a person's fingerprints. This is done by comparing the fingerprint found at a crime scene with known fingerprints in a database or on file. Fingerprint examiners use specialized techniques and equipment to carefully examine the details of the ridge patterns to determine a match.
What is the use of the importance of the fingerprint region in infrared spectroscopy?
The fingerprint region in infrared spectrscopy is used for identifying compounds by matching the sample spectrum to the standard. The fingerprint region is specific to each compound. Very similar compounds will have small differences in the fingerprint region so the fingerprint region can be used to differentiate them.
Where is the fingerprint scanner on the bad control center on spy island on poptropica?
In the final building when you are reprogramming the computers. you use the fingerprint to get into the building.
