How Does a ‘Fingerprint’ Help Solve Crimes?

A fingerprint is like a special pattern on your finger, every person has one that’s different from others. When someone touches something, they leave behind this pattern, and police can use it to find out who was there. It's like leaving a tiny sign that says, 'I was here!'

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Examples

A thief leaves a fingerprint on a glass window, police match it to their database and find out who was there.
Your fingerprint can be used to unlock your phone, just like how detectives use it to solve crimes.
A detective finds a fingerprint on a wallet, it matches the suspect's, proving he touched it.

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Categories: Technology · forensic science,biometrics,crime solving