Materials have a variety of properties that can be used to solve computational problems, according to studies in substrate-based computing.BZ computers, slime mold computers, plant computers, and collision-based liquid marbles computers are just a few examples of prototypes produced for future and emergent computing devices. Modeling the computational processes that exist in such systems, however, is a difficult task in general, and determining which part of the embodied system is doing the computation is still somewhat ill-defined.