Thames & Kosmos Master Detective Toolkit V2 handleiding

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Thames & Kosmos

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Handleiding

Making fingerprints visible

Fingerprints are incredibly important

for criminologists and detectives.

Every year, thousands of criminals are

convicted based on fingerprints found

at the scene of the crime. It works

because everyone has somewhat

different patterns on their fingertips,

which never change as long as they live.

For this to happen, though, fingerprints

have to be found at the crime scene and

rendered visible.

At the crime scene itself, you should

think about where a perpetrator may

have touched something. Those are

the locations where you should focus

your search. But remember that any

print you find may be old, and that

not everyone who leaves behind a

fingerprint is a perpetrator.

Taking fingerprints

You will need:

Fingerprint powder

Ink pad

Fingerprint brush

Magnifying glass

Fingerprint stickers

Profile cards sheet

Sheet of paper (letter size), tape

Here’s how:

1. First, examine the tip of your

index finger under the magnifying

glass. You will see a pattern of

curved lines. Some of these lines

stand out like tiny mountain ranges,

with valleys lying between them.

Now look at the other fingers.

Check to see if every finger has the

same pattern on it.

2. Press one finger onto the ink

pad and then onto a sheet of white

paper. You will get an image of your

fingerprint pattern. Repeat with

your other nine fingers. Cut the

fingerprints out of the paper and

tape them onto the profile card.

Caution! The ink in this kit can cause

stains! Be careful that nothing gets

onto carpet, clothing, or tablecloth!

After use, immediately close the ink

pad so that it doesn’t dry out or get

on anything. Always wash your hands

after using the ink pad.

Taking fingerprints

Ink pad

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