I used to sign with a pen on behalf of the recipient to confirm that it was correct. However, couriers usually bring their own pens, and sometimes the couriers' signature pens such as moving goods and transporting are easy to lose. It often happens that the recipient does not have a pen signature and the courier signs for it. In order to avoid these abnormal situations. Later, instead, the courier tore off the part of the courier's receipt that was retained by the courier company. Or scan with a scanning gun.