Drone tells you it has arrived and then in the app there's an unlock button in the app.
Drone arrives & calls where you're asked to press 1.
Drone arrives & SMS where replying would achieve the same.
Drone arrives and connecting Bluetooth via the app would unlock.
It's 2020, KISS mentality. Assumption: Why do us in software development have a tenancy to over engineer.
Maybe secure delivery isn't hard for takeout, because usually somebody is hungry and wants it (usually). But UPS or Fedex happens when nobody's home. That's probably the better user story for secure delivery.
Probably it'd just drop it I guess.
Source?
Its arguable, apartment-dwellers patronize takeout more than folks with houses (and kitchens and larders and cooking equipment and storage).