For human beings it is taken for granted, for a technical system not implemented so far: the possibility to listen to the conversation of other people and derive activities from the understood contents. The project AcListant (Active Listening Assistant, 2013–2015) implemented a prototype for understanding the controller-pilot-communication.

The successor project AcListant-Strips, started in 2015, uses Assistant Based Speech Recognition (ABSR) as an additional input device to replace mouse and keyboard inputs. The goal is to reduce controller workload and to increase aircraft throughput.