Trace Evidence
Materials that could be transferred during the commission of a violent crime, and are small enough to be transferred to and from a scene
What is trace evidence
used in remote surveillance of a crime scene
What is a drone
may be retained up to 12 days
What is fiber evidence on a pig carcass?
The floor types used in this study
What is smooth and rough linoleum, vinyl, carpet, and bath mat?
all yarn evidence was removed at all heights and takeoff distances tested for these floor types
What is smooth and rough linoleum and vinyl?
Needs to be maintained in order to preserve trace evidence
What is integrity of the scene?
the type of drone used in this study
What is a quadcopter drone
75% of fiber evidence was lost
What is in 2 days?
The amount of fibers placed on each floor tile
What is hundreds?
this floor type only lost fibers below 1.5m height and did not lose any during the takeoff tests
What is the bath mat?
The area of forced air underneath a drone
What is downwash?
Preserved when a drone is used to survey a scene instead of an investigator
What is larger evidence like cars?
Heights the drone was tested at
What is between 0.5-3m?
this floor type lost few fibers above 1.5m for takeoff and height tests
to take pictures and make 3D reconstructions
What two things have police been using drones for at crime scenes (other than surveillance)?
takeoff distances the drone was tested at
What is between 0.5-2m?
The conclusion of this study
What is smoother surfaces lose more fiber evidence, and height and takeoff distance impact retention of evidence?