Foot Print Analysis

Forensics, this week our main topic was analysing our own prints. Our task today was to teach everyone what we have been doing, and tell them how things work. At first, we look at the evidence, and now we are looking more further around the impression evidence. Impression evidence will only be created when two objects come in contact with enough force to cause an"impression". In a simple sentence, impression evidence is when there are many types of evidence left behind at a crime scene. Impressions are patterns left being on the surface or people at crime scenes. 

Examples 

~ Fingerprints

~ Shoe prints/footprints

~ Tool marks

~ Tyre tracks

~ Ballistics (bullet mark)

~ Bite marks 

 

Yesterday, our class went outside to do this activity and make these footprints. It was really easy to do this since all you have to do was to get a piece of paper, a tray with black paint with a small amount of water and lastly water to clean the bottom of your shoes. Then you can make your own footprint by steeping on the paint tray. Also one of the important things is to walk from heel to toe of paper. You will also have to do it again, since when it isn't that wet then it will make it more visible to see your patterns and you have to leave it to dry. 

Shoes leave impressions at the scene of a crime known as shoeprints, which can be extremely useful to a forensic investigator. As a person walks, the sole of a shoe picks up various types of material, which is easily transferred to other surfaces, creating an impression that can reveal the pattern on the sole. To detect shoe prints, investigators examine the soil, particularly near the potential entry and exit points of a crime scene, as well as carpet, linoleum, paper, and dust. If a shoe print is discovered in a pool of blood, it can be used as incriminating evidence.

In this picture, there is a variety of different types of shoe patterns. I would best describe my one as lines&circles. Since I don't have the evidence, I would like to use this picture as an example since it is also similar to my shoe pattern. As you can see, it's most likely to be only lines, but it still goes with it. We all have different types of shoes and especially the size of them. People stand in a variety of ways, as illustrated by the image on the right. We can explain the different types of shoe prints using the image below. Knowing the shoe pattern at the bottom allows us to determine the size of the shoe, the brand in some cases, and the age of the shoe.