I know I can obstruct the camera lens, but does anyone know how to effectively block the microphone on a device like this?
Perhaps there is non-destructive way to remove power entirely?
Perhaps there is non-destructive way to remove power entirely?
Automobiles are equipped with fuse panels. Removing (then, presumably, replacing before returning the vehicle) the proper fuse would be non-destructive, and if this device is properly integrated, would do what you want. However, I wouldn't be surprised to find that this device is actually wired into the radio circuit, so in order to turn it off you'll have to forgo listening to music.
It's also possible that the contract you sign with Hertz forbids removing a fuse for this purpose. IANAL but that would be shitty. To completely CYA, it might be better to remove the fuse, intentionally burn it out by shorting across the battery posts, then return the burned-out fuse to the panel. Then you could plausibly claim "hey the device just stopped working".
Personally I don't have any qualms about pulling the fuse being against the terms. I just don't think it will even be a viable option.