The ICAO Phase 2 security proposals (which will go through on the nod) require a method of identifying the persons at the flight deck door before the flight crew open it and allow entry. It is also a requirement of the US FAA SFAR 92-4 which is due to be implemented by all US carriers by March 2003. It is expected that the US authorities will require all aircraft flying into the States to comply.
The display is to be visible from either FD seat and likewise the door is to be capable of being released from either position.
It may be a video camera but one Boeing proposal allows for a clear bullet proof panel in the door. There have already been problems with the camera being considered intrusive to First class passengers and the angle has had to be changed slightly.
CS
