Sharing colour calibration settings?

I'm a graphic designer. I use a Pantone Huey to calibrate the colour settings on my Mac Pro. A business partner abroad has just bought a new iMac. Is there any way I can share my settings with him, so that I know he is seeing close enough to the exact colours that I see (accounting for different ambient light, eyesight etc) when I send him work. Is there a particular file(s) I can just email him?

Or does he have to go buy a calibration device too? And if so, how can we guarantee that what he sees is what I see?

Thanks.