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There is no point to the argument regards NP V FT and copyright. The guys at FT must have looked at NP's algorithm and came up with something identical or very close and included that as an alternative to their own FT code. To use FT with Il1946 you have to use their version of the NP algorithm (which is open source and anyone can dowload it to take a peek at it). Unfortunately, NP also looked at existing Tracking codes used in other applications and adapted it to their Headtracking product. In that respect it would have been impossible to patent the code as it was a 'development' not an 'invention'. You can write algorithims in many different ways to perform the same output data. NP could only protect their registered trademark and products that they themselves designed - hence the removal of references to the use of existing NP hardware in FT's literature. It's down to interpretation and NP consider that 'headtracking' is their intellectual property as a gaming product accessory and naturally want to protect it in other ways. The solution was simple, develop an encryption code and protect it legally. The real and only sensible argument is wether CoD should use the old code or include FT's code in addition to NP's.