Fuda (talismans) are a form of lucky charm.
They consist of paper or wood bearing a picture representing gods, spirits, or their powers.
They are sold or given away at temples and shrines, and depending on the god or the place where they are issued, they protect the bearer from a variety of misfortunes.
For instance, a kadormori is placed by the front door to ward off evil, and Kojinsama is a god who protects the kitchen.
Whereas the small charms that people carry on their person protect the individual, fuda protects a place or space.
They are generally displayed in the place to be protected, on the wall, by the front door, or pasted onto a pillar.
When fixing a fuda, it is important that you do not use adhesive tape, drawing pins, or nails.
The paste used for the paper on sliding doors is to be recommended as this can be removed cleanly afterwards.
Fuda are available throughout the country, and they offer various types of protection based on the deities of temples, shrines, or local legends.
I think that perhaps the Japanese custom of enshrining talismans within living spaces serves as an element in nurturing a spirit of veneration of things that are invisible to the eye.