1. An information processing method comprising: obtaining first image data on a first face of a first user; generating first address information by extracting first feature points of the first face of the first user from the first image data and using the first feature points; obtaining second image data on a second face of a second user; generating second address information b extracting second feature points of the second face from the second image data and using the second feature points if the second image data is similar to the first image data and the second user is different from the first user.