Forensic evidence

Forensic evidence is a way of using forensic science to find out who someone is using technology to look at stuff they've touched. It is commonly used at places where crimes have taken place and are being investigated.
One of the most common types of evidence is fingerprints. When someone touches something, they leave their fingerprint on it. Using technology, people can look at the fingerprint on the object that was touched and find out who touched it.