I dare say if you are involved in an accident and someone accused you of being on your phone as an example ,then it would help there…Just like when tachos where introduced ,i personally do not think you will stop driver facing cameras ,as new drivers come in ,it will be all they know ,as no doubt training schools will fit them ,especially when insurance companies demand them as time goes by…What companies need to know is the law ref using them ,they can’t review the footage and discipline you for calling the boss a anchor for example