[Reza] continues his work with the remote control protocol for a Touch Tunes Jukebox. This time around he had a universal remote PCB fabricated and wrote code to skip to the next track. Regular readers will remember that he started by making an Arduino transmit all possible remote codes to give him free credits. This dedicated board will do the same thing, but he had to come up with a way to sniff the remote code inorder to skip songs he doesn’t like.
The problem with trying to skip tracks is that it takes over four minutes to transmit the a command with every possible remote control code. [Reza] mentions that at this rate the song will probably be done playing before the proper code is tried. So he refocused his efforts to use the device to capture the remote code for the Jukebox at the local bar. If you happen to be there when the bar tender uses the remote, you can then go back to your workshop and reverse engineer the signal to get at the code. The obvious next step is to write firmware that can automatically parse the captured signal. This is not an easy task as the board is prone to capture garbage if there is too much RF noise in the room.
Filed under: digital audio hacks, security hacks
