RIM's been busy on the patent application front lately, filing off concepts for anything from smartphone docks to rotating keypads -- even flirting with potential forays into forensics peripherals. Perhaps sensing the crushing need to differentiate its ailing BlackBerry brand, Waterloo's taken to the USPTO with a doc submitted last November that could do just that. The pressure-sensitive input scheme and touchscreen interface described therein would respond to a user-set pattern of force by granting access to a handheld device's features and applications. Sure sounds a heckuva lot like a new password protection implementation, but that's just our humble take. What it actually is, where it goes from this legal limbo and whether or not it ever winds up in BB 10 tech is truly up in the air. What you can count on, though, is a continued flood of in-process IP procurement from a company close to the edge.