According to the German Federal Institute for Risk Assessment (BfR), the risk of transmission from surfaces with recent virus contamination cannot be completely excluded. However, due to the relatively low stability of the coronavirus in the environment, this is only likely to last for a short period of time after contamination. In the case of items requiring a signature, such as registered letters or parcels, the delivery agents are largely doing away with the requirement for the customer's signature. They are now documenting delivery of the item themselves, thereby minimising personal contact as well as contact with hand scanners and pens. Alternatively, a desired delivery location for contactless drop-off can be agreed with the delivery agent.