Carpet Radio Requires Human Body To Function

I like the Human Antenna, a carpet radio that uses your body as a radio wave conductor and tuner. However, looking at how it works on video, I can easily see some problems.

You know, I see a comfy carpet like that and I can only think about two people on it. Clearly, not the ideal scenario to tune to any station. [Florian Kräutli via Hometone]