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> As an aside, it turns out that on CDMA at least, the list of cell phone
> numbers that should start ringing during this 1.25 time fits in one or two
> packets, and is sorted by phone number, so while you're listening, if you
> hear a higher phone number in the list, you can power down. It turns out
> you have to adjust the sleep timer depending on how many phone numbers you
> listened to, because running the receiver heats up the quartz crystal
> differently depending on how long it runs, so the timer runs at a
> different speed, and you'll miss your wake-up window if you don't. Pretty
> intensely complicated inside there.
Yeh I imagine on a lot of systems that are operating right on the limit of
what's possible there are cool things like this that have to be done.
On a side note, isn't that a pretty bad security design, in that your
handset could (in theory) be able to display a list of all phone numbers
called in your cell? I mean your phone could just store the last few
seconds worth of called-numbers in your cell, and then when you hear your
target's phone ring, trial and error through the short-list for to get their
number.
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