Former editors Rebekah Brooks and Andrew Coulson are on trial, along with six others, on a range of charges related to hacking and bribery.
Prosecutors today played a recording of private investigator Glenn Mulcaire "blagging" seeking information about a mobile phone passcode from a service provider using a false name.
Prosecution lawyer Andrew Edis said Mulcaire made the recording himself.
The jury was also shown emails from Mulcaire to then-News of the World news editor Ian Edmondson containing mobile phone numbers and details of voicemail inboxes for politician and royals.