Very true, we are not allowed to block the camera with tape or anything else. Why would I want to? DriveCam has already saved my friends job, ours works like this...it records all the time, when an event triggers the camera such as a big dip in the road, panic breaking, or a collision the camera goes to work, it saves the previous 8 seconds and the next 4 seconds, ours download overnight, providing its a downloadable event, sometimes you will hit a hard bump and it will go off, but it isn't a downloadable event and the light will go back to green, if it stays red it will download later and be sent to DriveCam and then on to the company.
The idea of looking at the driver...lets say you rear end somebody, and you were texting, that takes liability off the company, it also is a tool used to improve driving, as some drivers do things they aren't even aware of, like making a panic stop due to stopped trafic, hitting the other lane without looking, mgmt can use that to coach a driver on that behavior, 9 times out of 10 the driver in question is going to pay better attention.
I like the cameras, like everyone else I complained, then I realized it may save my butt, like it did my friend, the only folks that should have a problem are those that are dumb drivers or overly aggressive, or text while driving, stupid crap like that.
A driver can't be viewed at any time, something has to trigger the camera, an event, then its only for the past 8 seconds and the 4 after the event. If your a professional and do your job correctly, there is nothing to fear from DriveCam. Its a tool that I now enjoy having my back.