[unisog] Keyboard sniffers

Valdis.Kletnieks at vt.edu Valdis.Kletnieks at vt.edu
Mon May 2 20:36:20 GMT 2005

On Mon, 02 May 2005 13:21:12 PDT, Brandon Enright said:
> Unfortunately the AT-PS/2 interface is a non-plug-n-play legacy interface so you
> aren't going to be able to receive a signal notifying you of the device being
> unplugged or plugged in.  One way to accomplish the detection would be to send
> periodic commands to the keyboard and wait for the acknowledgement.

You'd have to poll literally every few seconds - fast enough so you'll
notice if somebody pulls the cable, pops a recorder on the end, and plugs
it back in....
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