@south.coffee wrote:
Good point about senders using a copy of the local boxes QR code. Maybe adding a geo location check in the app when the QR code is scanned to cross check the box location could be applied.
That would definitely make it more likely the package was lodged in the street box, but not prove it - this could be an issue in other ways for Australia Post, for example if nothing ever gets an official scan, the sender could feel the QR scan at the box proves lodgement, but I have no doubt Aus Post wouldn't accept that as proof and therefore wouldn't accept any liability, either. It could also be an issue determining the actual box clearance time for the parcel in question and where / how Aus Post try to locate it.
These kinds of issues (should they occur) would likely be a very small percentage of articles posted in this way, but Australia post would still need to consider them, and then create new procedures and T&Cs for them as well.
Which is not to say the idea I proffered above wouldn't come with its own set of issues - i.e. there's a reason self-service terminals at supermarkets require a staff member to oversee. In the case of a street box, I would presume only digital lodgement receipts could be issued as paper receipts would be highly impractical, and there'd be no one there who could do anything if there's a barcode read error, the lodgement recepticle locks up, or "unexpected package in the lodging area" starts chirping. 
