Fingerprints - help!

[Iron Man™]

Alright, here me out guys. I started school just last week down ), and was ALREADY given a project. We were each given the option to choose something, so knowing little old me, I choose to research the knewly found discovery of why red headed women always want the most sex. Now, of course, I wasn't allowed to. So I had no idea what to choose from. My teacher (pretty hot ) gave me the choice of finger prints.

Now at first, I was like WTF? I don't jack about them. But I have to start getting this thing done by Monday, andI've been doing all the searches I can. Can anyone tell me how to ID them, as well as the different patterns they have? Also to preserve and collect them.

Thanks in advance.

 

[Morg]

actually I think blonds wants more sex, my ex sure damn did

 

[Darthphere]

Dude, really, Google, you can find anything on the internet. Nobody helped me with my homework.

 

[E-Mack]

actually I think blonds wants more sex, my ex sure damn did

But as we all know, it was just to get to the money.

As for the topic at hand, Wikipedia is your best friend. Go through their database, you'll find tons of info.

 

[Frizzo the Clown]

Dude, really, Google, you can find anything on the internet. Nobody helped me with my homework.

Hell, in my day, we didn't have Google. We had to actually go to the library to look up ****.

 

[Da Docta]

Hell, in my day, we didn't have Google. We had to actually go to the library to look up ****.

Oh noes!

 

[Morg]

But as we all know, it was just to get to the money.

sadly true

 

[Frizzo the Clown]

Oh noes!

And I had to walk 30 miles, barefoot, in the snow to get to school!

 

[Morg]

And I had to walk 30 miles, barefoot, in the snow to get to school!

If you were my father's age, yes but you are not

 

[Yurka]

s**t i had to do that before I moved here, stop complaining

 

[Alpha and Omega]

Can anyone tell me how to ID them, as well as the different patterns they have? Also to preserve and collect them.

Thanks in advance.

Check out a Criminal Investigation website; there should be plenty of information on one of those, along w/ step by step processes, and perhaps an example or two from a previously documented scene.

good luck.

 

[Frizzo the Clown]

If you were my father's age, yes but you are not

That depends....how old is your father?

 

[Morg]

That depends....how old is your father?

Older then you, I seen your profile

 

[Iceman]

Hell, in my day, we didn't have Google. We had to actually go to the library to look up ****.

Do those things still exist?

 

[Mee]

Do those things still exist?

Only in memories...

 

[Nightwing 52]

Fingerprints are made up of four (some will argue three) general patterns made up by the friction ridges on our fingers.

There are arches, tents (which can be argued is just a really tall arch), loops and ****ls. Within each pattern are ridge details. There are seven main ones, but for brevety, examples would be a ridge ending, when on friction ridge stops or a bifurcation where one ridge splits into two ridges. Each point of a ridge detail is called a minutiae. If you can match up a certain number of minutiae via type (bifurcation) and exact location between a person's fingerprint and a fingerprint found at any scene, you can match them (positively identify a print as being a particular person's). We've been using fingerprints since the 1800s and the law still does not specify how many minutae are acceptable as a minimum amount to do an identification.

Collecting and preserving is a much lengthier answer, as it all depends on the quality of the print, where it was left (humid vs dry/porous vs a non-porous surface) and how long it's been there.

The most commonly known method is the trusty powder and lift, which is simply apply a dusting (so many use way too much) of powder applied by a brush so that the moisture of the print holds the powder making it visable. Now there are many different types of powders and many different types of brushes.

There are also chemical methods where different chemical solutions react with different parts of the fingerprint's chemical make up. The reaction results in a dying affect, making the print visable. Ninhydrin, Amido Black, Luminol, Hungarian Red, Small Particle Reagent, DMO are all different chemicals used at different times for fingerprints, if you want to look into that yourself.

If the print is extremely fragile (like a print left in the dust of a table, where the print is actually the missing dust), then sometimes, the best preservation is photographing it as is.

 

[GoldenAgeHero]

Dude, really, Google, you can find anything on the internet. Nobody helped me with my homework.

did you ever ask for help?

 

[Frizzo the Clown]

Older then you, I seen your profile

Oh damn. I hate it when people come up with an obvious, logical answer.

 

[Iceman]

Fingerprints are made up of four (some will argue three) general patterns made up by the friction ridges on our fingers.

There are arches, tents (which can be argued is just a really tall arch), loops and ****ls. Within each pattern are ridge details. There are seven main ones, but for brevety, examples would be a ridge ending, when on friction ridge stops or a bifurcation where one ridge splits into two ridges. Each point of a ridge detail is called a minutiae. If you can match up a certain number of minutiae via type (bifurcation) and exact location between a person's fingerprint and a fingerprint found at any scene, you can match them (positively identify a print as being a particular person's). We've been using fingerprints since the 1800s and the law still does not specify how many minutae are acceptable as a minimum amount to do an identification.

Collecting and preserving is a much lengthier answer, as it all depends on the quality of the print, where it was left (humid vs dry/porous vs a non-porous surface) and how long it's been there.

The most commonly known method is the trusty powder and lift, which is simply apply a dusting (so many use way too much) of powder applied by a brush so that the moisture of the print holds the powder making it visable. Now there are many different types of powders and many different types of brushes.

There are also chemical methods where different chemical solutions react with different parts of the fingerprint's chemical make up. The reaction results in a dying affect, making the print visable. Ninhydrin, Amido Black, Luminol, Hungarian Red, Small Particle Reagent, DMO are all different chemicals used at different times for fingerprints, if you want to look into that yourself.

If the print is extremely fragile (like a print left in the dust of a table, where the print is actually the missing dust), then sometimes, the best preservation is photographing it as is.

I think that's one of the better answers so far.

Do you just know all this stuff? Impressive if so.

 

[Mee]

I think that's one of the better answers so far. Do you just know all this stuff? Impressive if so.

Prep time.

 

[Morg]

Prep time.

Well naturally, he is Batman

 

[Nightwing 52]

Do you just know all this stuff? Impressive if so.

Really, it's one of the few things out of many that people should know. Not because some may think they won't actually need it, but because it can be really interesting if you take the time to learn all that it offers.

Which, I've been doing all my life, of course....

 

[Darthphere]

did you ever ask for help?

Asking for help, and providing the answer are two very different things.

 

[Iceman]

Really, it's one of the few things out of many that people should know. Not because some may think they won't actually need it, but because it can be really interesting if you take the time to learn all that it offers.

Which, I've been doing all my life, of course....

You definitely got me interested in the subject.

 

[Iron Man™]

Fingerprints are made up of four (some will argue three) general patterns made up by the friction ridges on our fingers.

There are arches, tents (which can be argued is just a really tall arch), loops and ****ls. Within each pattern are ridge details. There are seven main ones, but for brevety, examples would be a ridge ending, when on friction ridge stops or a bifurcation where one ridge splits into two ridges. Each point of a ridge detail is called a minutiae. If you can match up a certain number of minutiae via type (bifurcation) and exact location between a person's fingerprint and a fingerprint found at any scene, you can match them (positively identify a print as being a particular person's). We've been using fingerprints since the 1800s and the law still does not specify how many minutae are acceptable as a minimum amount to do an identification.

Collecting and preserving is a much lengthier answer, as it all depends on the quality of the print, where it was left (humid vs dry/porous vs a non-porous surface) and how long it's been there.

The most commonly known method is the trusty powder and lift, which is simply apply a dusting (so many use way too much) of powder applied by a brush so that the moisture of the print holds the powder making it visable. Now there are many different types of powders and many different types of brushes.

There are also chemical methods where different chemical solutions react with different parts of the fingerprint's chemical make up. The reaction results in a dying affect, making the print visable. Ninhydrin, Amido Black, Luminol, Hungarian Red, Small Particle Reagent, DMO are all different chemicals used at different times for fingerprints, if you want to look into that yourself.

If the print is extremely fragile (like a print left in the dust of a table, where the print is actually the missing dust), then sometimes, the best preservation is photographing it as is.

Holy.....World's ****ing Greatest Detective.

Dude, Bats, thanks so much for the help. And I'll for sure take your advice, I'm positive it'll help.

A couple of more questions.

I once heard that Zebra stripes are as unique as fingerprints. Same as a dog's nose. Is that true? Also, what would happen if you try to burn off the finger print and try to be unidentifiable?