this new technology. this is what he had to say. >> there are a number of new technologies being developed which will greatly assist the tracking issue. and one that the industry is very excited about is the development of what's called space-based adsb pardon the jargon. this will be a technology which will involve a lot of low orbiting satellites which will be able to pick up the transponder signals from all commercial aircraft and will be able to track. >> anywhere in the world? >> anywhere in the world, yes. we're told within the next three years this system will have global coverage. >> there is a key phrase in there, zain, or key word which is the transponders being switched on. of course mh 370, the transponders were switched off. and investigators believe that was a human intervention there. so if these transponders are switched off, still that information is not going to go down. i asked tony tyler about why