Types of Finger Prints:

There are three major types of prints people leave on surfaces. These three would be:

Latent:

You cannot see latent prints with the naked eye.

They are formed from the sweat from sebaceous

glands on the body or water, salt, amino acids and

oils contained in sweat. The sweat and fluids create

prints must be developed before they can be seen

or photographed. They can be made sufficiently

visible by dusting, fuming or chemical reagents.

Plastic:
Also known as impressed prints, plastic

prints are indentations left into surfaces

that are soft such as clay, paint, wax, etc.

They do not need to be developed; you

can see them right on the surfaces.

Direct:
Direct prints can be seen right on surfaces

without any modifications. Most times

these prints are photographed instead of

lifted so that you don't risk messing up the

print. You can often find these fingerprints

from ink, dust and blood.