In the video, a person is writing on a piece of paper with a black marker. The paper has a list of numbers written on it, and the person is writing a code next to the numbers. The code appears to be a series of numbers and letters that correspond to the numbers on the list. The person's hand is visible as they write, and the marker is held in their right hand. The background is a plain surface, and there is no other visible object in the video.