Which of the following is NOT considered impression evidence?

Impression evidence refers to any evidence created when an object makes contact with a surface, leaving a mark that can be analyzed to link the object to a crime scene. Fingerprints, palm prints, and footwear impressions are all considered types of impression evidence because they involve the transfer of unique patterns from a person's skin or a shoe to a surface, enabling identification and analysis.

In contrast, hair samples do not fall under the category of impression evidence. Hair can provide individual characteristics and forensic value, such as determining species or potentially linking a suspect to a crime through DNA analysis if the root is present, but it does not produce an impression or mark on a surface as the other choices do. Thus, hair samples are categorized as trace evidence rather than impression evidence.