Using a Bluetooth receiver and a special app, you can fire most Canon DSLRs (and some high-end compacts), in addition to quite a few Nikon DSLR's, from your iPhone
Accessory makers Satechi have devised a new gadget that will allow you to remotely control most Canon DSLR's, several Canon compacts, and most high-end Nikon DSLR's, from the confort of your Apple device. The Satechi Bluetooth Smart Trigger is a combination of a $45 Bluetooth receiver and smartphone app.
