Well, it could chat with the driver. Where I live the norm is when a driver is assigned your order they get to text you to confirm your location is correct(annoying, I know), they text you again if they are somehow finding it hard to get to your location, they text when they get to your gate for an access code, they text when they get to the front of your house. Thats a lot of texting I'lld gladly let an agent do for me.
Where I live if they can't find the door or need an access code, then I put it in the order instructions so they don't have to ask me next time.