An A.I. Interface (Artificial Intelligence Interface) is a device designed and developed to allow the living brain of supposedly any sentient being to interface with virtually any form of artificial intelligence. A device like this was seen in the series Other Space.
By episode 8, science officer Kent Woolworth had experimented with a small egg-shaped device which would be placed behind the ear and programmed into the main computer. He placed it behind his ear and activated it, causing him to collapse and fall on the ground. Upon losing consciousness in his physical form, Kent's consciousness entered the computer, allowing him to have a physical relationship with Natasha.