History of Fingerprints

What did investigators find at the scene of Joseph Riebel's murder?

• Bloody shoeprints

• A shard of glass with bloody fingerprints

• Blood spatter

• A knife dripping in blood

While people have known about fingerprints for centuries, when did scientists begin to classify fingerprints?

• The 1600's

• The 1700's

• The 1800's

• The 1900's

Impressions left in a surface, like plaster, are the type of fingerprint known as_________.

• Patent

• Plastic

• Latent

Latent fingerprints on a non-porous surface are

• visible to the eye

• require spraying with ninhydrin

• require dusting with powder

Ninhydrin is used to find

• visible fingerprints

• fingerprints on porous surfaces

• fingerprints on non-pourous surfaces

What can make fingerprint evidence difficult to match?

• Human error

• Smudges

• Overlayed prints

• All of these