After the meeting, Downing Street said Mr Cameron had asked the Education Secretary Michael Gove to examine arrangements for confronting extreme views in schools, Business Secretary Vince Cable to monitor universities and Justice Secretary Chris Grayling to do the same in prisons.

BBC: Woolwich murder suspects remanded in custody

Another element that might concern some companies, according to Cable Digital News, is a "monitor application" that the cable company uses to control how devices use processing resources.

ENGADGET: Cable ops, consumer electronics manufacturers sign agreement on tru2way roll out

It can also apparently be configured such that each monitor has it's own USB cable-run back to the PC.

ENGADGET: Samsung's UbiSync monitor rig: all USB, all the time