Addressing is generally done by hand, and is an opportunity to demonstrate one's handwriting (see "shodō"). The postcards may have spaces for the sender to write a personal message. Blank cards are available, so people can hand-write or draw their own. Rubber stamps with conventional messages and with the annual animal are on sale at department stores and other outlets, and many people buy ink brushes for personal greetings. Special printing devices are popular, especially among people who practice crafts. Software also lets artists create their own designs and output them using their computer's color printer. Because a gregarious individual might have hundreds to write, print shops offer a wide variety of sample postcards with short messages so that the sender has only to write addresses. Even with the rise in popularity of email, the "nengajō" remains very popular in Japan, although the younger generation hardly send any cards, preferring to exchange digital greetings using their mobile phones. In recent years this digital greeting preference is gradually accepted among the society.