Thread: bluetooth cell headset: solution to incar mic problem?

I want to do the same but with a little twist. I'm pretty sure that these earpieces have a hotkey on them designed to answer an incoming call or set a mobile phone into voice recognition to dial.

Now - I want to use this same feature with the PC. All I need is for the PC to be able to detect when the hotkey on the bluetooth earpiece is pressed. Is this possible? I've got some interesting tricks up my sleeve.