Yes. Our packages are always shipped with insurance, and insurance requires a proof of delivery, i.e. a signature of the recipient.
What does this mean for you, the customer? It depends from country to country, but in most cases the package is offered twice or three times to the recipient. If nobody is there to receive (and sign for) the package then it usually gets transferred to a collection point nearby (e.g. a post office or something similar).
This also means that in most cases it is not possible to “drop off the package on the porch” or “leave it behind the garage”.