Senjafuda (千社札?, literally "thousand shrine tags") are stickers or scraps of paper posted on the gates of shrines and Buddhist temples in Japan. The stickers bear the name of the worshipper, and can be purchased pre-printed with common names at temples and shrines throughout Japan, as well as at stationery stores and video game centres. Senjafuda were originally made from wooden slats, but have been made of paper since the Edo period.
A single senjafuda measures 1.6 Sun (58mm) in width and 4.8 Sun (173mm) in height. This gives the senjafuda a ratio of 1:3. A frame is drawn inside this space which contains the lettering or pictures. In 1887 a measurement for this frame was also established as 48mm wide and 144mm tall.
Ordinarily, the designs were used to commemorate a visit to a temple or shrine and printed with simple monochromatic schemes, but eventually aesthetic sense gave way to colorful variations and designs. In the pleasure quarters of Kyoto, colorful designs were employed on senjafuda and used in place of traditional business cards. This variation is called "hana-meishi" which roughly translated to "flower business card." Today, the "business card" use of senjafuda is the most common.
Senjafuda were primarily printed with Edomoji, or Edo-period lettering styles, and pressed with the same traditional wooden boards used to produce ukiyo-e prints.
Stickers on shrines are often pasted in very obvious, easily seen locations, but a variation on this practice is to purposely obscure the location of the senjafuda in order to protect it from exposure to wind and rain and thus prolong its presence.
Senjafuda were first produced in the Heian period 794 to 1185when shrine worshipers made pilgrimages to visits to many shrines and worship the Buddhist goddess of mercy, Kannon. They were not originally made of paper, they were first made from wooden slats that were hung from the gates of Kannon Temples by nails made of bamboo. The slats were carved out with the visitors’ name, area of origin and often included a prayer for a good life and afterlife. There are two styles of Senjafuda, the older style, daimei nosatsu and kokan nosatsu the new style. Daimei nosatsu are basic black ink on white paper. The ink used is called sumi and it is so strong that after the printed senjafuda was placed on the shrine or temple gate, years later when the paper peeled away, the ink remained. Which is why many shrine Kannushi or shinshoku do not like the use of senjafuda. Add to the fact that younger senjafuda practitioners nowadays, do not follow tradition and pray nor buy a stamp from the shrine before applying their senjafuda.