I think the fact that you can already pretty much do this via a bluetooth headset or headphones, yet few do, speaks volumes about the social action of putting a

I think the fact that you can already pretty much do this via a bluetooth headset or headphones, yet few do, speaks volumes about the social action of putting a phone to your head in public. Not everything is a technology-related barrier. I suspect most people will be less inclined to look like they are talking to themselves than you would think.