Lattice-based access control
In computer security, lattice-based access control (LBAC) is an access control model defined to control data transfers between objects (such as resources, computers, and applications) and subjects (such as individuals, groups or organizations). Subjects and objects will be collectively called 'the entities' and the model is valid even if there is not a distinction between subjects and objects.
Source: Wikipedia — Lattice-based access control (CC BY-SA 4.0)