Patent
(Which, we say again, we really don't know all that well. Rely on nothing on this website.)
Although each element of the process may be individually untenable, an ordered combination of claim limitations, considered holistically, might state a claim to be considered a single practical, particular application of the idea.
C in J: Bifurcation of eligibility/patentability is problematic.
BASCOM GLOBAL INTERNET v. AT&T MOBILITY LLC