Not long ago we were discussing Nikon’s Media Port UP300x headset tethering and few related patents that followed. For real wireless tethering you can go with Nikon’s remote WT-4a (for over 700 US bucks) or you can DIY one for around $50. You will need this (or any similar) Cables Unlimited USB-WIRELESS Dongle Set. Go to Pete’s Tech Ramblings for all the details.