Quite a useful trick

Read about this. Not sure how true is it, as never tried :P We can use our body to boost signal. For example, we can use our hand on radio to boost or clarify the signal. Another thing which will help us is, when trying to locate our car at the carpark. Normally, we would tend to stretch your arm and press the alarm. To amplify your alarm signal, you can use body-as-extended-antenna trick by putting it under your chin and press the button. It is said to be able to boost the alarm signal and locate your car. Try it out. ;)