Cy Vance: Phone Encryption Can Halt Justice Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Manhattan District Attorney Cyrus Vance says cell phone and app encryption impedes law enforcement officials' ability to investigate and prosecute crime. ( Alex Williamson / Getty ) Produced by Jillian Weinberger and Mythili Rao Hosted by Todd Zwillich Produced by PRI and WNYC