"Supreme court justices are 'content' for journalists, members of the public and legal teams to use 'live text-based communications' to let the outside world know what is happening in the courtroom.  Consent was given because cases before the court do not involve interaction with witnesses or jurors."

The live tweeting approval isn't absolute, though.  There are a few exceptions including certain family cases.

Communications permitted include e-mail, microblogging, and Twitter, the BBC noted.  TechRadar explained that the Supreme Court "rarely calls for confidentiality."  Further, live tweeting "was first allowed in December" during the appeal hearing for Julian Assange.