Thames & Kosmos Master Detective Toolkit V2 handleiding

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Thames & Kosmos

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5. Central pocket loop

6. Plain whorl

7. Double loop whorl

8. Accidental

3. Radial loop

4. Ulnar loop

2. Tented arch

1. Plain arch

For the FBI, which stores millions of

fingerprints, it isn’t enough just to

compare patterns. The tiniest details

within patterns can be crucial, such

as little hooks, branchings, islands,

crossings. They are translated into a

formula, i.e. a combination of letters

and numbers, using a specified schema,

and saved like that in a computer. The

computer can then sort through all the

formulas in a matter of minutes.

pad ink. Write down the person the

print is from, and which finger it is.

4. Now have your partner give

you one of the prints from your

collection, but without telling you

whose it is. Can you figure out who

it belongs to?

Ridge pattern types

You will need:

Fingerprint sides of profile cards

Magnifying glass

Ink pad

Paper

Pencil

Here’s how:

1. When looking over the

fingerprints you have collected,

you have probably noticed that

there are different kinds of

prints. For example, there are

swirls, arches, loops, T shapes,

and mixtures of all of them.

2. If you find two similar prints,

you have to compare them

point for point under the

magnifying lens. Only after you

have determined that they are

really the same can you say with

certainty that they come from

the same person.

3. Ask your relatives and friends

whether you can take their

fingerprints. Afterwards, they

can easily wash off the stamp

The FBI identifies

fingerprints by these

eight basic types.

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