Fingerprints, DNA, eyewitness testimony. Add one more item to the list of "ironclad" evidence exposed as biased: cell phone data. If you have been following our blog, you may have read about instances in which the validity of DNA evidence was questioned due to the manner in which it was collected or tested. In court, prosecutors may present evidence that appears to be objective, when actually the interpretation of the information makes it quite subjective. Coupled with the testimony of experts, this type of misleading evidence can be bulletproof in court.