Brain to computer interfaces are becoming increasingly common. These devices read and record patterns in the mind to control a video game or a machine, and are useful for people who have problems with standard controls. As the fidelity of brain to computer interfaces increases, they will become even more a part of everyday high-tech life. How secure are these mind-reading devices? Could someone hack into the device and read out your passwords and credit card data? Check out this article which examines the interesting perils of brain to computer interfaces. Usenix.org has the story.