Express delivery is also for better service and continuous upgrading and optimization. The signature on the courier belongs to the delivery category, which can be upgraded later, and can be returned directly with the attached bill without signature (signature is also a hassle because of rainy weather); And some couriers, because they can't get them in time, will be left on the spot. Because it is a telephone notification, it can be used as one of the signature evidences. The signature on the endorsement is for final confirmation and reconciliation.