Ghoul Box / Graveyard Dimension Passport
Ghoul Box tool #7 · Office of the Groundskeeper
Graveyard Dimension Passport
Crossing over? You'll need papers. Grave Hog, self-appointed Groundskeeper of the Graveyard Dimension (actual authority: none whatsoever), will stamp anything.
The link in your address bar carries your name and stamps (never your photo), so anyone who opens it sees the same papers.