Amazon lists lockers in buildings with controlled access as drop off points as well. It’s up to you to confirm you have access to the locker.

If you need an app to enter that store and you need to enter the store to return an item, then it’s pretty clear you need an app to return an item at that store.

They didn't say I needed it.

It’s as if you didn’t read my comment at all.

> If you need an app to enter that store and you need to enter the store to return an item, then it’s pretty clear you need an app to return an item at that store.

You don't need an app to enter the store. You need an app to shop at the store. Presumably many classes of person enter the store for various non-shopping reasons without needing the app. It's not beyond the bounds of reason to imagine that for the non-shopping purpose of returning an unrelated item you may not need the shopping app to enter the store -- or, indeed, to imagine that for the product return flow the shoppers' entrance may not factor into the equation at all.

(I don't have a horse in this race, I just don't think you can usually apply the transitive property to the real world.)

> Amazon lists lockers in buildings with controlled access as drop off points as well. It’s up to you to confirm you have access to the locker.

I don’t think this makes the point you think it makes.

> If you need an app to enter that store and you need to enter the store to return an item, then it’s pretty clear you need an app to return an item at that store.

“Excuse me, you need to install the app on your phone to enter the store”, the store manager said to the paramedic responding to a call of an unconscious senior citizen on the floor of the Amazon Go store.