[mothered]

A lot of companies on a large scale are aware of the empty box method. Furthermore (and generally speaking), the goods are weighed on dispatch and weights are documented In transit.

If you were to use such a method, given the fact you don't open It on receipt In the presence of the courier, the signature has no bearing. I haven't SE'd Zalando nor have I researched their TOS, protocols, guidelines and methodologies used, so without all that, I cannot provide a definitive SE method. Every entity, and I mean "every" one, Is vulnerable and susceptible to exploitation. With that In mind, I suggest you do your homework and research the company to Identify and establish exactly what you're up against. You can then formulate your SE accordingly.