It is a device that converts chemical energy to electrical energy by the catalytic reaction of microorganisms and bacteria, consuming for example flies and other insects. The device is able to steal some electrons from these bacteria, and hence energy is produced! This is the real evolution of robots people! Humans where used by the Matrix to generate electricity for the machines with bio-electricity. Learning about microbial fuel cells though makes me believe that the machines will probably consume us like pizzas. The following video shows also a brilliant clock that is powered by flies, trapped on flypaper.