Shortly following Apple’s release of the second-generation iPod touch, which unexpectedly added Nike + iPod receiver functionality to the touchscreen device, a hardware teardown by iFixit revealed the presence of a Broadcom BCM4325 chip with integrated Bluetooth support. The chip was determined at the time to be used for communication with the optional Nike + iPod Sensor accessory, but had no other known purpose. During the iPhone OS 3.0 Event…