Keys is charged with giving the hacking group Anonymous the log-in credentials to the computer system of The Tribune Co.

WSJ: Social media editor in court on hacking charges

And in what may be a downside for some potential users, all chatters must log in using Twitter, Facebook, Google, or LinkedIn, and their full names are transparent in the system.

FORBES: Chrome Extension Turns Any Website Into a Chatroom

To log into the system, players just wave their hands in front of the screen.

CNN: Microsoft Kinect to hit stores November 4

In court on Wednesday, a lawyer for the girl's father claimed Facebook's open registration system allowed children to log-in and warned that it could put them at risk from paedophiles.

BBC: Teenage girl's father launches Facebook court challenge