So the current situation:
ParcelForce/HomeNetwork/XYZ try deliver your parcel at home, you are out so they instead deliver a note through the door telling you to come and get it (or if you are lucky rearrange delivery for another time). You recieve the card, jump in the car drive to the depot with its free parking, talk to a person who picks it up off a shelf and gives it to you.
Amzon emails you that your package has been delivered. you recieve the email, jump in the car, drive to the shopping centre, pay for parking, hit buttons on a machine, call amazon that the machine isn't working/someone has put the wrong package in your drawer/pick it up.
Can't say I see any benefit there. What some retailers (particularly clothes) are doing is letting your delivery be delivered to a local corner shop convenient for you, talk to the checkout person, log it on the kiosk and have the package handed over - simpler the amazon's, more reliable and far more scalable. Clever technology isn't always the best answer