Alt-BEAM Archive
Message #12793
To: beam@sgiblab.sgi.com
From: robmc@acay.com.au
Date: Fri, 08 Oct 1999 09:47:04 -0700
Subject: [alt-beam] Re: Sonic Triangulation
I once saw an ultrasonic "mouse" that sat on the top of a finger which
used three transducers that sat on the two top corners of the monitor
and one on a bottom one. It worked up to about four metres away and I
suppose was very largely possible due to the processing power of the
computer.
Rob
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