The intent is to use a synthetic AOA sensor. It uses accelerometers to calculate the AOA without having to use an analogue sensor vane in the airflow.
The computer then cross references all AOA inputs and rejects the one that is different from the other 2. This system would have PREVENTED both the Lion Air and the Ethiopian 737 MAX crashes.
It is outrageous to me that after everything that has happened, Boeing is still resisting retrofitting all MAX’s