On 2010-Sep-27 15:34:19 +0200, Alexander Leidinger <alexan...@leidinger.net> wrote: >Quoting Hans Petter Selasky <hsela...@c2i.net> (from Mon, 27 Sep 2010 >14:21:42 +0200): >> I was thinking about adding a sysctl to ukbd and ums that shows how many >> keypresses have been done and how many pixels you have moved the mouse during >> a day.
I agree with Alexander's comments on the usefulness or otherwise of just counting keypresses and mouse pixels. Mouse clicks or number of mouse movements is probably more useful for ergonomics than pixels moved. >Regarding the security: > - don't make this real-time stats, add some artificial delay Delaying the reporting of actual keystroke numbers by several seconds is rather painful. If you want to go this path, either just update the visible count every N seconds (have a callout that triggers every N seconds) or M events (where N or M are configurable and maybe small random numbers). > - make it depending on a compile time knob (disabled > by default) and issue a warning on device attach if > compiled in My personal view is that this is being excessively paranoid. Note that FreeBSD already reports the total number characters read/written via TTY devices. I don't think it's necessary to go as far as compiled-out by default with warnings if enabled - a runtime knob is adequate. Having the sysctl disabled by default and only enabled by root (maybe only readable by root) should be adequate since there are plenty of other mechanisms for root to obtain actual keypress and mouse movement data. -- Peter Jeremy
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