Yes, it's called a Lock Pick. Needs to be installed (hardware) so I am leary about ripping my dash apart just to see the rear view while I'm driving (I get the towing aspect tho). That being said, entering data into your nav while driving is a great workaround, although I can see why it is a distraction.
Regarding my install, its great. As I mentioned, it was easy and pretty quick, no issues. I have not gone the extra step to 19074 or whatever the next version is. Any specific reason why I should go that step or just leave it?
Also, I found one small issue. I usually keep my lightning cord plugged into one of the front USB's (right next to the charge pad). But when I start my truck and the screen boots up I get a "Bad USB cable or charge pad" when it's plugged in. When it is not plugged in there is no error. I know the cable is good as it charges and connects to my phone otherwise. Not life changing, just thought I would mention it.