Finally a remote trigger solution for iOS that doesn't involve a computer between the iOS device and the camera!
http://fstoppers.com/gear-iphone-ios5-app-is-dslr-remote-timelapse-controllerUK Company Triggertrap have been making camera triggers for some time now, and recently released an iOS app that offers remote control of many DSLRs, in addition to control the iOS camera itself. Unlike other remote apps available though, the Triggertrap Mobile can be triggered by things like sound, vibration, and facial recognition. Other notable features include eased timelapses that create a ramped-up speed effect over time, distance-lapses, and doing HDR captures.