I suspect that people will start writing their patent claims like this: "A method of representing numbers as binary strings in the registers of a CPU, and mani

I suspect that people will start writing their patent claims like this: "A method of representing numbers as binary strings in the registers of a CPU, and manipulating those registers such that the output is the representation of the sum of the input numbers." That is what happened in America when we "banned" math^H^H^H^Hsoftware patents. Software itself is not patentable, but the use of a machine to execute specific software is. So the NZ equivalent of "on a computer" will be "manipulating CPU registers" or some similar nonsense.