On a sunny day (Mon, 27 Oct 2008 21:35:14 -0700) it happened JosephKK wrote in :
>Hey, no CFs allowed! They don't work at -20F anyhow.
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>>John
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>Aha! The lamp (light source) must not be visible... Easy to meet.
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>Just the same, do not make things too bright.
Ah, that gives me an idea. Use sound for navigation, say short beeps if left of centre, and long beeps if right. Just stay with the tone, and it leads you right to the front door.
Or a small RF transmitter, and a direction finder. Yes, just like airplanes.
;-)