Does anyone know of a utility or some other method that I can pair my iPhone with my Mac via Bluetooth for the purpose of controlling a Keynote (and, ideally, PowerPoint) presentation? All the utilities I’ve found seem to want to communicate through WiFi, but I sometimes have to present in locations without WiFi.
Apple blocks iOS apps from using the “normal” (classic) Bluetooth functions, so there’s no way an app can pair with the Mac this way, unless you jailbreak the iPhone (then, I believe, there are apps in Cydia that can do this).
There is some other way, in theory: The new “bluetooth LE” protocol is a totally different protocol, and that can be used by any iOS app without Apple’s approval. However, it’s quite slow and is meant for things like controlling - in fact, exactly what you want. But for this to work you need both devices to support BtLE - and older Macs don’t do that, for instance.
But if yours does, and the iPhone as well (needs to be 4s or later, I believe), then you might find something for that, or you could write it yourself
Well, I’m not jailbreaking my phone just for this. I may simply have to go with a separate router. I just really didn’t want to have ANOTHER piece of hardware to carry around. However, the router that Michel pointed out looks somewhat interesting.