Is it possible to develop an iOS app with bluetooth capabilities?

Question

Would the following be possible?

Let\'s say I have a scale with Bluetooth capabilities, when I turn it on, it sends the weight via BT.

Is it technically possible

Answer 1

While the External Accessory Framework with Bluetooth is one of the possible solutions, it has additional requirements to be built as per Apple MFi, here Bluetooth reference is to the Classic Bluetooth (Version 3.x and below)

The best solution for the use case you have defined is to use the Bluetooth Low Energy (LE) (aka Bluetooth Smart) technology (Bluetooth 4.0) and it is available to applications as part of the Core Bluetooth Frameworks Here are the APIs for Core Bluetooth that applications can use.

While currently Bluetooth Low Energy is supported on the latest iPhone 4S, New Mac Mini & Macbook Air - its expected most new Apple & Others hardware will have this standard.