This time, it's a sinister-looking black box with a red switch protruding from it. It looks very innocent, until you try and turn the switch off. Take a look:
As Jason has explained on YouTube, the machine has got six different responses for turning the switch off, as well as two evasive manoeuvres to prevent it being turned on in the first place. Cunning, eh? If you want to try your hand at beating it, he's even posted the instructions on how to make your own machine on his website.