When was the last time someone broke into a PDA, or desktop for that matter, and stole files via IR? Doing it with IR requires at least some level of direct access to the system. BT doesn't.

And, I will admit that I don't know specifics on this one, but I know that "hidden" on a wifi network means next to nothing. What does "hidden" on in BT _really_ get you? It keeps out amateurs?

It's my understanding that, just like wifi, if you know what you're doing, you can easily get past bluetooth's rudimentary protections (being hidden, and the other aspects) and get access to its facilities.

With IR, last I checked, you don't trust any device automatically, when something wants to get access to your files, it _has_ to ask. And in order to get that far, it _has_ to establish line of sight with your IR port. In a closed office, or in your pocket, that's pretty difficult with IR. Not difficult at all with BT.

(and, no, not every site that cares about BT cares about IR, for exactly the reasons I'm stating)