Princeton Technology is going to release a remote control for iPhone/iPad/iPod touch cameras - "PIP-CR1" - on October 18.
The device can be separated into two parts. The smaller part is a receiver, which you use by inserted into the iPhone/iPad/iPod touch earphone jack. When you take a photo, use the other part as a remote control.
Estimated price: ¥1,980
Color: Black, White
Compatible OS: iPhone/iPad/iPod touch of iOS 5.0 or later