This seems so cheap/easy to get right it's nuts. Get the cheapest tablet you can find that's reliable and has GPS. Whack the location app on that. Stick a to

This seems so cheap/easy to get right it's nuts. Get the cheapest tablet you can find that's reliable and has GPS. Whack the location app on that. Stick a todo list on it that they can push items to. Sorted. Tie the todo list to the locations and leave it on the cart - you can track the work instead of the person. It doesn't matter if they've gone outside for a smoke, it matters that the work's getting done.