Why Bluetooth? An Android app has been developed for easy control of the Reflowduino, and will even graph the temperature profile.

However, as the video above shows, you can also create your own simple apps for your Arduino project using MIT App Inventor.

Thanks to the LightBlue Bean+, however, one of those roadblocks has been torn down. The Bean+ is basically an Arduino board that can be programmed via Bluetooth LE.