it is certain that sony is taking prudence by filing for a patent and of course anyone can safely assume that the purpose for the filed patent can hint that there could be another vulnerability in the PS3 awaiting to be exploited.
i do think that sony will follow microsoft in the very same footsteps in securing an exclusive monopoly on hardware & software peripherals for the PS3 just as microsoft did by blocking out all datel products from the 360.
PS1/SCPH-7501 | MM3 modchip
PS2 v9 | 250GB hdd | PS3 component cable | katana 32mb mc
PS3/CECH-2001B | 250GB hdd | 3.65 ofw