Eli5: Why does our car key FOB have work from far away if we bring it close to our head

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As the title states? Why does the fob emit signals far away when it is attached to our head?

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Anonymous 0 Comments

The fob doesn’t change what it does. But your skull reflects radio waves a bit, and so it acts a little like a parabolic dish does to focus the radio waves. For best results, tilt your head back and put the fob under your chin.

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