Clever of them to send the signal through the headphone jack.
Too bad I intend to never own an iphone lol
Yes, very clever indeed. When you think about it both sound waves and IR waves are just that: waves. Send a sound signal to a headphone jack, and it's up to the device to convert it to IR. Pretty genius actually; if I ever got an iPod Touch (no, never an iPhone) I might have a look at this.
This is seriously tempting, especially as I do currently own an iPod Touch (and may get an iPad in the near future-- I'm loving Stanza so much on the smaller iDevice).
There have been a few remote control hardware devices for the iPhone et. al., one of which requires a sort of case that snaps around the whole unit. The app is labelled simply "Remote" and is from Power A. Can't tell you how it works as I don't have the $40 snap-on unit. The screenshots, however, look promising... and my TV remote has lost its power button, making me have to get up to shut the thing off... hmm.
Like the tiny little microphones that fit into the headphone jack, though, I'd be nervous about losing this miniscule and relatively expensive piece of hardware.