Zesty systems Inc.(Japan) has released ZGR-1 accessory to provide
superior functionality to extend the competence of Nikon DSLR.
The ZGR-1 works with smartphone (this release is compatible to
iPhone/iPod touch/iPad ) to provide long time exposure time control,
shutter release, GPS information and etc.
Control your Nikon DSLR with your iPhone !
http://www.zesty.co.jp