However, the convenience comes at a big price - the tiny loop antenna inside is extremely inefficient, transmitting less than 10% of the energy pumped into it, while the rest is simply converted into heat.
When holding your remote to your head, your arm, shoulder and head form a much larger "body loop" antenna which is almost 100 times more efficient than the remote's antenna.
Then, just like in a transformer, the small single "winding" of the small loop magnetically couples with the larger, nearby single "winding" of your "body-loop".
The magnetic coupling between these two antennas is not great, but it's good enough to make the combination antenna around 2x to 3x better than the remote alone, resulting in a notable improvement in operating range."
Cure: Put in a better/bigger/stronger loop antenna.