O-fuda

O-fuda is a ancient talisman used throughout the ages as an holy object to cleanse and protect homes from malevolent beings or spirits but through other arts shinobi's used this talisman as seals to imprison or to keep a demon out of a village even sacred places.

Dorobō's Talismans
Through the powerful influence and chakra Dorobō created numerous transparent Talismans with the kanji for "封" (Seal, Fūin) with other kanji symbols littered all over them. He used these seals to place a barrier around earth keeping other beings from entering earth also placed them on the moon and within the sun to keep the celestial dragons sealed away till they weakened long enough for them to break free.

Trivia

 * O-fuda is a type of household amulet or talisman, issued by a Shinto shrine, hung in the house for protection, a gofu (護符). It may also be called shinpu (神符). It is made by inscribing the name of a kami (god) and the name of the Shinto shrine or of a representative of the kami on a strip of paper, wood, cloth, or metal.