Xiaoyu Alan Zheng, Johannes Soons, Robert Thompson
National Institute of Standards and Technology
Certain commercial equipment, instruments, or materials are
identified in this presentation to specify the experimental
procedure adequately. Such identification is not intended to
imply recommendation or endorsement by the National Institute
of Standards and Technology or the National Institute of Justice,
nor is it intended to imply that the materials or equipment
identified are necessarily the best available for the purpose.
Criticism on Subjectivity
• Pattern evidence have come under scrutiny in recent years
due to the subjective nature of the conclusions.
• NAS 20...