Facebook already has your name, your friends and your photos: now it might want your thoughts.

Job adverts posted in California suggest that the social network is planning telepathic technology that can read brain waves and send them between people, a way of sharing that would go far beyond liking status updates or sharing holiday photos.

The vacancies at Facebook's secretive "Building 8" division, spotted by Business Insider, include PhD-level roles for a "brain-computer interface engineer" and a "neural imaging engineer", for a two-year project that will "accomplish bold things".