Why does a remote car key work when held to your head/body?
physics.stackexchange.com
I was trying to unlock my car with a keyfob, but I was out of range. A friend of mine said that I have to hold the transmitter next to my head. It worked, so I tried the following later that day: ...
  • The Barto
    3·
    11 months ago

    Fob have small antenna, press fob to head, body becomes big antenna, boost signal with body.

    • Pup Biru@aussie.zone
      1·
      11 months ago

      the accepted answer acknowledges this possibility but suggests an alternative

      the effect is probably caused by one or more of the cavities in your body (maybe your head or chest cavity) acting as a resonance chamber for the RF signal from your wireless remote