CocoaDev

Does anybody know how to find out if Bluetooth is available on the machine? I can’t seem to find an IOBluetooth or IOKit call to search for it. Anybody have some hints?

http://developer.apple.com/documentation/DeviceDrivers/Reference/IOBluetooth/IOBluetoothUserLib/Functions/Functions.html

As in

if (IOBluetoothLocalDeviceAvailable()) {
    // do a bunch of bluetooth stuff ...
}

– MikeTrent

It also makes sense to check whether the device is turned on:

• (BOOL)localDeviceIsPowered { BluetoothHCIPowerState powerState; IOBluetoothLocalDeviceGetPowerState(&powerState); if(powerState == kBluetoothHCIPowerStateOFF) return FALSE; return TRUE; }

Source: http://www.tims-weblog.com/sites/blog/content/view/50/44/