On Sun, 3 Dec 2006 18:22:11 -0000 someone who may be "Roger Mills"
wrote this:-

I wouldn't use a motion sensor - I'd simply use a PIR detector which detects
the presence of a warm body.

Not quite. They detect the movement of a warm body.


--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54