Locking your car with a central locking device?

how come if you hold the remote to your ear the distance you can lock your car from is doubled?|||the answer is simple at any time that you do this weather its to your ear or your mouth it works better for the reson being that you act as antenna because your naturaly grounded therfore amplifing the remote creating an antenna like, instead of holding it out in front of you where it is resonable less reaction