gait analysis is up there with bite marks(https://www.theguardian.com/us-news/2022/apr/28/forensics-bi... )/jeans wear marks(https://www.pnas.org/doi/10.1073/pnas.1917222117) and other FBI post hoc ergo propter hoc fraud.

If it worked this would be a solved case https://www.fbi.gov/contact-us/field-offices/washingtondc/ne...