Headphones connected to some sort of music player which puts a minute voltage across the two earpieces and only plays music when the measured resistance across the earpieces is close to the pre-calibrated resistance of your head. So, when you take your headphones off, the music is paused.
-- hippo, Jun 17 2005

In some cases, it would sense an open- circuit.
-- Ian Tindale, Jun 17 2005


This fails to take in to account the larger headed gentleman.
Also, I often prefer to listen to music using one headphone, so that I can pay semi-attention to the world around me. How would that work?
-- hidden truths, Jun 17 2005


//This fails to take in to account the larger headed gentleman.//
Did you miss the bit where it says 'pre-calibrated'?
-- angel, Jun 17 2005


Yes [angel]. Yes I did.
-- hidden truths, Jun 17 2005


You could put two contacts on each 'phone and measure the resistance of the ear/side of head (depending on size of headphones). You'd need less power and wouldn't end up shoving it through your brain... unless that's the point?
-- st3f, Jun 17 2005


[st3f] that might be a better idea actually
-- hippo, Jun 17 2005


Schmoove [+].
-- DocBrown, Jun 17 2005


hippo: all part of the same general idea. Halfbrainstorming.
-- st3f, Jun 17 2005



halfbakery