Shape Key Compass is a Blender add-on that helps users identify shape keys by selecting a region of a mesh. It is useful when you know what part of a character you want to modify but do not know the shape key's name. It analyzes selected vertices and presents shape keys associated with that area. The add-on can also inspect a shape key's driver, if available.
The addon is designed primarily for navigating and understanding existing shape-key setups.
The addon currently supports only specific Windows and Linux Blender builds.