Founded by Elon Musk, Neuralink is on a mission to allow humans to interface directly with AI in hopes of keeping the nascent technology from destroying humanity. Really. Its N1 sensor is a step towards that future. The sensor will be embedded inside the body, use a series of "threads" to interface with the brain, then read, clean up, and amplify the resulting signals. The company has developed a neurosurgical robot capable of inserting the threads while avoiding blood vessels, and while current versions of the system require a wired USB-C connection, in the future up to four N1 sensors will transmit data wirelessly to a device mounted behind the ear, controlled via an iPhone app. While the system is hard to wrap your head around, it's not as far-fetched as you'd think: a prototype has already allowed a monkey to control a computer with its brain, and the company hopes to begin working with human subjects as soon as next year.