Because your head is full of water it amplifies the rf signal from the remote extending its range. Virtually you point your key at your head that acts as an arena relaying the signal further.

If I had to guess prolly cus the sensor for the lock is on to of the dash so holding it up makes the radio waves go towards it

I use my girls head, call that road head remote

CRIMALLY UNDERRATED SERIOUSLY

I used to touch the metal key itself to the metal flashing of my building, double tap the lock button on the fob, and hear my car honk on the other side of the building where it was parked. The building became a transmitting antenna, with just nearly enough power to make it.

It works best if you hold it upwards against the soft part like under your chin

use elon musks neuralink

Can i get pinned before this gets popular