>Which is why you digitise the signal in the camera and then encrypt it >before sending it across the transmission media. >Just for once the guys in the White Hats are ahead of the guys in the Black >Hats 8-) Fine providing you use an algorithm that is not an integer multiple or submultiples of the frame length, so that any such re-injection of a single frame produces hash on the screen. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics