It doesn't scale universely, but it doesn't need to: it only needs to cover a specific company/organization/department. So it's trivial to work at that scale.
Hell, it's so feasible, it can even done manually IRL by some person (like discussions where a person holds the "talking stick" and only there are allowed to speak until they pass it to another person - that's a lock).
Hell, it's so feasible, it can even done manually IRL by some person (like discussions where a person holds the "talking stick" and only there are allowed to speak until they pass it to another person - that's a lock).