What is Impression Evidence?
Impression evidence is a major contributor to move a crime scene investigation forward. Basically, it is a type of evidence wherein objects retain their characteristics or create an impression on other physical objects within a crime scene when it is stamped or pressed against each other. Because they are hardly noticeable unless closely examined, most impression evidences are overlooked during examination of a crime scene. Therefore, it is important for crime scene investigators to re-examine the site of a crime in order to verify other evidences that have been missed, especially impression evidence.
This type of evidence are categorized as two things: impressions made on either hard or soft surfaces. Moreover, there are two dimensional impressions wherein investigators can determine the width and length of the object that left an impression on a given surface. Meanwhile, there are also three dimensional impressions that add depth to the width and length measurement. Therefore, the latter type of impression evidence enable crime scene investigators to have a more precise idea of what type of object might have left that impression....
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