No, it won’t stop cops from lying. Not on the streets. Not on the stand. Not to their spouse, sergeant or god. But it just might end the “useful law enforcement tool” of using lies during interrogations to induce confessions. A bill has been introduced in New York to require the recording of interrogations absent good cause and adding a new section to Criminal Procedure Law § 60.45 that includes this line under the definition of statements involuntarily made:
(ii) BY KNOWINGLY COMMUNICATING FALSE FACTS ABOUT EVIDENCE TO THE DEFENDANT

