Researchers from the UK have been experimenting with microbial fuel cells and urine in order to generate power. The team has created the first wearable energy generator system powered by microbial fuel cell technology in the form of a pair of socks. The system is designed to circulate the urine through the fuel cells as you walk by means of a basic pump made of soft tubes under the heel. In testing, the system was able to generate enough power to send a message every two minutes to a wireless receiver.
Although many people might not want to urinate into their socks everyday to generate a little power, this type of wearable system could be useful in an emergency situation to transmit a person’s location.