Batcave Question

Who does/did ward the Batcave from detection by magic and magic based teleportation? The Batfam leaves alot of blood around after a fight it seems a magic user should be able to use that find the Batcave.
I get that it has tech based sensors to detect the EM fluctuations, Gravity distortions, and changes in light refraction preceeding a portal opening to give the Batfam warning.
Looking for specific issues or episodes.