A deepfake video uses artificial intelligence to alter an image so that it appears to be someone else, or say something else, or depict someone doing something other than what they really were. Done with care, a deepfake can show almost anything you like, and it can be virtually impossible for the naked eye to recognize the illusion.
Recently, a report appeared in the journal Psychological Science in the Public Interest that indicated large variability in what psychological tests are being allowed in American courts. These tests are used in both civil and criminal cases and can have enormous impact. In a criminal case, a psychological test could influence everything from whether the defendant gets bail to their ultimate sentence.
Traditionally, search warrants only went one direction. A crime was committed or suspected, and the police would investigate. Witnesses would be contacted. A theory would be developed. When the police had probable cause to search for evidence, they got a search warrant and searched.
Over the last year, the nonprofit investigative newsroom ProPublica has published a series of articles that called into question whether some forensic techniques produce reliable results. One of the techniques questioned is the matching of wear marks along the seams of blue jeans. Now, a leading forensic image analyst and a postdoctoral researcher have published a study finding that the technique produces limited evidence at best.
In 2009, the National Research Council issued a report on forensic analysis in court. It found that few forensic investigative techniques are supported by sufficient science.
When a criminal defendant's fingerprints are at issue, the stakes are high. The person has been accused of a crime, and those fingerprints could theoretically place them at the crime scene or otherwise indicate their involvement. People go to prison in cases where a matching fingerprint is the primary evidence.
Have you ever wondered if the government is monitoring your Facebook or Instagram? They are.
About a million people each year are arrested for drunk driving in the United States. When you're pulled over on suspicion of OWI, you will be asked to blow into a breathalyzer.
In 2018, a Mexican immigrant who had been brought to the U.S. as a teenager was convicted in Iowa of intent to deliver marijuana. During a 2017 traffic stop, officers allegedly found 184 one-pound bags of marijuana and a handgun in his car. Although he claimed he had been using the marijuana to treat back pain, Guillermo A. pled guilty to the charge.
Prosecutors have a legal and ethical duty not to knowingly allow perjury. If a prosecutor learns that a witness -- even a police officer -- in one of their cases lied on the stand, that prosecutor is required to notify the judge and attempt to correct the matter.