You also track who tightened the bolt when with which torque (could be wrong if the machine is defective and that is exactly what you want to be able to audit).

You also track who tightened the bolt when with which torque (could be wrong if the machine is defective and that is exactly what you want to be able to audit). Some machines are even able to tell in which spatial position they were used - kind of a micro-GPS. Some trials are running with AR glasses that show the position of a bolt to the operator and also log the actions.