I have what might be the exact opposite story. 20 years ago, in my first graduate job, we were issued pagers. One day my friend lost his - and it was on silent

I have what might be the exact opposite story. 20 years ago, in my first graduate job, we were issued pagers. One day my friend lost his - and it was on silent mode. We really didn't want to tell the company that it had disappeared. Then we remembered that, at a certain time - I recall it being reasonably late at night - the device would emit a single, short, beep. I don't remember why, but even on silent mode, that beep would sound. At five minutes to the hour - because this thing's clock wasn't synchronised, and we didn't know how accurate it was - we all positioned ourselves around the house. Silent as a mouse we waited, until - yes! - there it is, somewhere upstairs. Now that we knew that it was actually in the house, it was just a matter of finding the thing. It was in his pants pocket - but they way they were folded in the wardrobe, the pocket wasn't where you'd expect it to be if you did a casual "pat the pockets" to see if it was in there.