The 2 Factor code wouldn’t have helped here though, as OP would have given code and therefore “signed for” the package.Amazon did have a bit of this happening and started sending codes for expensive things, though I think this was to make it harder for the customer to get a refund. I am very wary of buying expensive things from there for this reason. Husband bought a very expensive camera lens from there, that wasn't for sale anywhere else and opened it at the doorstep, just incase there was a cheap book in the package instead.