External bluetooth devices to iphone?

is it possible to get data from external bluetooth device(not iphone) to iphone(bluetooth sensor to iphone)?because normally apple requires both end must open the application with same GKsessionID?any help pl开发者_JAVA百科ease?will mFI provide special chip t0 install in external device?

This is related to the question about getting data from external device.

Se if this helps. I am trying to use the same in one of my project now.

I'm not sure what you mean about a special chip, but I can tell you that bluetooth can only be accessed via GameKit, which only works on Apple iOS devices. I'm sure there's some private api, but that would require jailbreaking, which would get your app rejected from Apple right away.