The unit I drive, you have to take the key out. If you move, say to go to a better menu, the "meal" clock resets and the screen locks out. I use the "break timer," instead of the "meal clock," I drop out, do my business, pretrip, then set the clock back a half hour, wait if I have to, and then go. Working a shuttle, I just drop out, and then start the clock. I show a half hour break, do I take one? -no. If it's over 22 minutes, its a break to me. I was told you do not have to show it on the handheld- for now. Just do it, because someday- you will have to.
The majority of the time, my wand is still configuring when I get back to go home anyway, now what? I'm sure the DOT will understand, my gate was more important than finding a wand that works.