Facilitated communication
Facilitated communication (FC), or supported typing, is a scientifically discredited technique that claims to allow non-verbal people, such as those with autism, to communicate. The technique involves a facilitator guiding the disabled person's arm or hand in an attempt to help them type on a keyboard or other such device that they are unable to properly use if unfacilitated.
Source: Wikipedia — Facilitated communication (CC BY-SA 4.0)