The easiest and most obvious is that the vehicles will just stop outside of the house/apartment and the person will walk to the street and unlock the package with a phone.
So, they will they only make deliveries when I'm home? Meaning the bulk of the fleet would operate after hours in the window from 6PM to 9PM, when people are home, but not yet in bed. I'm not sure this approach would work well for the average person with a 8AM to 5PM job.
However, if they -do- deliver it when I plan to be home, nights, weekends, etc.. and I set the delivery time and they adhere to it, that could work.