On Sat, May 19, 2001 at 08:21:13AM +0100, Christian J van den Bosch wrote:
>> You mentioned some stuff which is too short-range for your application.
> If you have a passageway which you use to enter and leave your place you
> could place one sensor at each end of the passageway - then your machine
> could tell whether you were in or out according to which sensor was most
> recently triggered.
Doesn't apply here, fortunately...
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