What is one example of individual physical evidence?

Individual physical evidence refers to materials that can be linked to a single source, thus providing strong, unique identification. Blood is a prime example of individual physical evidence because it contains DNA, which is specific to an individual. This unique genetic material can help in identifying an individual with a high degree of certainty.

In comparison, glass, soil, and paint can often share characteristics with many other samples, making them more suitable as class evidence rather than individual evidence. Class evidence can suggest a group of sources but does not definitively link to a specific person. For example, while certain types of glass, soil, or paint may have common properties and can suggest a particular area or source, they lack the individualized markers that blood possesses, which beyond forensic context, connects directly to an individual's identity.