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How long have police used fingerprints and footprints to help catch thieves?
more than one hundred years
What's the function of fingerprints and footprints?
to identify people
How do people leave a fingerprint when they touch something?
with the natural oils that people produce on their fingertips
How do people identify people using fingerprints?
They compare it with the fingerprints they have on their computers or in their books
How do detectives solve crimes using footprints?
They use the size of the footprints and the patterns of the footprints then they compare with the footprints at anoher crimes scenes
