its velocity. >> velocity and where it's coming from. >> security experts are saying, obviously, this can be a terrorist threat because it's targeting a plane-- a terrorist could look at this and say let me target a plane with a surface to air missile or let me direct another plane heading in that same direction so there can be a collision in the middle of the air, it's scary so they're saying we want iphone and want the google's android to get rid of this app. >> a quote from parliament one of the members blasting it, anything that makes it easier for our enemies to find targets is madness. the government must look at outlying such equipment. >> this is two bucks, folks. this is sophisticated technology and you can get it all for $2. why would you need to track a plane. what happens if the planes send out a signal that's broadcast very easily. why would you need this? >> i don't know that you need it. >> my question. >> i don't know that you need it and there's actually a lot of amateur pilots who have like small craft. >> that makes sense. >> a lot of the small pilots