Mouse with scraper, to scrape off sweat spots.

  • Thread starter Thread starter Skybuck Flying
  • Start date Start date
Tim said:
The little sliding bumpers on the bottom of my mouse naturally collect all
that gunk off my plastic mat. Out of sight, out of mind. Until I flip
over the mouse anyway...but why would I need to do that?

Tim
Some people might flip over the mouse to look at (his) ball(s)...
 
Jeff said:
There's also the question of what's inside the bloated mouse driver?
MS Intellipoint 6.2 for Vista is 15MBytes (compressed) big. That's a
far cry from the old MSDOS drivers that were perhaps 50KBytes. It
really doesn't take 14MBytes (compressed) to run 3 buttons and 2 shaft
encoders. So, what's inside all that surplus bloat?

Hint, it's a M$ driver! You have to expect a crazy amount of bloat.
Look at the size of a Win3.1 installation and then the size of a Vista
installation. People still write e-mails and letters on both so why the
need for the huge bloat?
 
Hey Man,

Somebody else confirmed it already he has it as well.

He described it as cotton stuff.

And it probably is cotton stuff.

I think it's a combination of:

Sweat + Cotton.

Or maybe it just cotton only.

Little spots on the desk.

My mother's PC has it as well. And no dirty jokes about my mum and me ! :)
:P* !! ;)

Bye,
Skybuck.
 
ChairmanOfTheBored said:
I once wanted to make a clear water ski, but decided against it for
obvious reasons. Now, I could simply include a radio beacon to find it,
were it ever lost.

Clear water ski? Well, I suppose it might be easier to ski on crystal
clear filtered water, but it seems rather expensive. Why would you
want to clarify the water?
There were 100% functional reasons for those, and if you don't know
what they are, you had no business working with, owning, or expounding on
muscle cars.

Nicely done. You imply that I don't know the answer, while not
bothering to supply any useful information yourself. Impressive.
Other than the inability to close the hood without installing a
blister or not wanting to gouge a big hole for the blower, why would
one want to drive around exposing one's muscle car engine?
Whatever. What they did NOT introduce is a way to take a shot of the
surroundings from within it, dope.

I guess you don't believe in undocumented features. That's fine.
Complacency among those that are being watched is desirable.
No. ALL plastic is fairly easy to scratch. A clear case, however,
will *show* it's surface abrasions more readily.

I stand corrected. Of course with the invisible infra-red
illuminator, the scratches don't show.
Yes. It is to make paranoid dopes like you actually think you have some
modicum of intelligence. I refute your claim, however. Do you see some
little optical bench inside there which allows an image other than
directly downward to be gathered? Get a clue.

Well, I won't use a clear case mouse because I don't want big brother
watching my activities. I would look inside for the little workbench,
but lacking a suitable mouse, I haven't.
I think that dopes that spout utter bullshit like you should be
required to submit your prints, DNA, and retinal scans.

How will that improve the quality of the utter bullshit that I'm
spouting? Ummm... submit prints, DNA, etc to whom?
Bwuahahahah!

Gesundheit. Next time, use a handkerchief.
Anyone that spouts utter bullshit like you should be banned from
technical newsgroups.

I don't see why I should. Your failure to appreciate my humor is
insufficient grounds for banishment. I would think your profanity
might qualify, but I just ignore all that.
You're a total dweeb.

Thank you. I've fairly well established myself as an archetypical
nerd. However, elevation to dweeb status has so far eluded me.
I consider you to be spewing horseshit for a response. You are
transparent in your endeavors, however.

Transparent? So, you've deduced my motive and purpose. I might as
well come clean and confess that I'm secretly conspiring to end
civilization as we know it by diverting circuit designers from their
assigned tasks through the vehicle of humor.
Your logic is a far cry from valid as well. Write your congressman.

I followed your instructions and wrote "your congressman" on a scratch
pad and nothing happened. What were you expecting?

Incidentally, our local congress critter is Sam Farr in case you're
interested.
Well... I guess you should monitor your ****ing net ports then, eh?

Nope. My firewall does that. I have better things to do that sit and
watch my net ports all day.
In some arenas, sure. Like mine. I make sure the boys get to talk to
each other, and that nobody else gets to listen. Doesn't matter what
****ing mouse they use either.

Let's see if I understand this. You have your "boys" talking to each
other, but nobody is listening? What good is that? I suppose it
might be useful for public speaking, where listening is optional, but
surely not for anything useful to a consultancy or business.
I have a desktop camera as well, but I have ZERO "security concerns"
regarding it. Guess what? It can't read my ****ing fingerprints EITHER,
and it is a far higher res than any ****ing mouse is or could ever be.

Have you ever noticed that USB cameras doesn't have a lens cover?
Every other type of camera, including my cell phone, has a lens cover,
but not the typical computer camera. It should be fairly obvious that
the lack of a lens cover makes it much easier to spy on the user. How
do you know that your USB camera isn't recording everything you do or
say (mine has a microphone inside).
I question the validity of anyone calling you technically inclined.

I don't recall anyone calling me that.
Let's just say that I won't be buying any of your products anytime
soon.

I should hope not. The last complete product that I designed was in
about 1983. I was previously a member of several design teams that
cranked out a wide variety of marine and commercial radios during the
1970's. Those are all thoroughly obsolete but possibly available on
the surplus market. Since then, I've been cleaning up other peoples
designs, business plans, product proposals, production problems, and
usenet postings.
 
Hey Man,

Somebody else confirmed it already he has it as well.

He described it as cotton stuff.

And it probably is cotton stuff.

I think it's a combination of:

Sweat + Cotton.

Or maybe it just cotton only.

Little spots on the desk.

My mother's PC has it as well. And no dirty jokes about my mum and me ! :)
:P* !! ;)

Bye,
Skybuck.
Your mother should be jailed as a felon for the crime of not flushing
your retarded ass down the toilet the moment your retarded ass exited
from her retarded ass.
 
Clear water ski? Well, I suppose it might be easier to ski on crystal
clear filtered water, but it seems rather expensive. Why would you
want to clarify the water?

You ain't real bright, boy.
Nicely done. You imply that I don't know the answer, while not
bothering to supply any useful information yourself. Impressive.
Other than the inability to close the hood without installing a
blister or not wanting to gouge a big hole for the blower, why would
one want to drive around exposing one's muscle car engine?


I guess you don't believe in undocumented features. That's fine.
Complacency among those that are being watched is desirable.


I stand corrected. Of course with the invisible infra-red
illuminator, the scratches don't show.


Well, I won't use a clear case mouse because I don't want big brother
watching my activities. I would look inside for the little workbench,
but lacking a suitable mouse, I haven't.


How will that improve the quality of the utter bullshit that I'm
spouting? Ummm... submit prints, DNA, etc to whom?

It is so you can be tracked, and allows you to affirm your paranoia.
Gesundheit. Next time, use a handkerchief.

**** off. Next time use more than two brain cells.
I don't see why I should. Your failure to appreciate my humor is
insufficient grounds for banishment. I would think your profanity
might qualify, but I just ignore all that.

Your remarks of being paranoid was not humor. You don't get to snake
away that easily.
Thank you. I've fairly well established myself as an archetypical
nerd. However, elevation to dweeb status has so far eluded me.

You don't have any status of any kind. You have too low of an IQ to
acquire a status.
Transparent? So, you've deduced my motive and purpose. I might as
well come clean and confess that I'm secretly conspiring to end
civilization as we know it by diverting circuit designers from their
assigned tasks through the vehicle of humor.

Like I said... bullshit.
I followed your instructions and wrote "your congressman" on a scratch
pad and nothing happened. What were you expecting?

Droll... very droll. Even Fred Flintstone would want to drop a
rooftop on you.
Incidentally, our local congress critter is Sam Farr in case you're
interested.


Nope. My firewall does that. I have better things to do that sit and
watch my net ports all day.

No. Your firewall sets your ports for access or not. Only YOU and a
specific piece of software meant to MONITOR them will perform the
monitoring task.
Let's see if I understand this. You have your "boys" talking to each
other, but nobody is listening? What good is that? I suppose it
might be useful for public speaking, where listening is optional, but
surely not for anything useful to a consultancy or business.

It's called secure communications, dipshit. "Our boys" are the allied
soldier stationed around the world. Get a clue.
Have you ever noticed that USB cameras doesn't have a lens cover?

It has a USB plug, however, and the data stream doesn't happen by
osmosis when it isn't plugged in, dipshit.
Every other type of camera, including my cell phone, has a lens cover,

My PC camera lens assembly is stationed BEHIND a clear plastic shield
and is not exposed to grubby finger contact or the elements, so it
doesn't need a ****ing lens cover to keep grubby fingered idiots like you
from touching it.
but not the typical computer camera.

You're an idiot.
It should be fairly obvious that
the lack of a lens cover makes it much easier to spy on the user.

Not if it only gets plugged in when it is going to be used for a video
comm link.
How
do you know that your USB camera isn't recording everything you do or
say (mine has a microphone inside).

See above, dumbfuck.
I don't recall anyone calling me that.

When and if anyone does, I will question the claim's validity 100%.
I should hope not. The last complete product that I designed was in
about 1983.

Oh boy!
I was previously a member of several design teams that
cranked out a wide variety of marine and commercial radios during the
1970's.

Oh boy! Heathkit!
Those are all thoroughly obsolete but possibly available on
the surplus market.

Or in some lame surplus store no doubt.
Since then, I've been cleaning up other peoples
designs,

Ah... a design janitor.
business plans,

Ah... a business plan janitor...

Do you do your doo doo diligence?
product proposals,

Ah... a product proposal janitor.
production problems,

Ah... a production problem janitor...
and
usenet postings.

Better get to work then janitor boy. Your posts are full of shit.
 
Your mother should be jailed as a felon for the crime of not flushing
your retarded ass down the toilet the moment your retarded ass exited
from her retarded ass.


What is with this toilet/ass/excrement thing? That's all you ever talk
about.

You are obsessed with butts and poop, and you accuse me of being gay!

If you disagree with my observation, try real hard to reply *without*
mentioning digestive by-products.

Even better, try saying something nice, or on-topic, once in a while.

John
 
What is with this toilet/ass/excrement thing? That's all you ever talk
about.

You are obsessed with butts and poop, and you accuse me of being gay!

If you disagree with my observation, try real hard to reply *without*
mentioning digestive by-products.

Even better, try saying something nice, or on-topic, once in a while.

John


You're a goddamned idiot. Following me around my posts like a little
****ing child.

I never said a goddamned thing about shit in the above post, but then
walks in you, the ultimate piece of shit., spewing it all over the place.

There... satisfied, shithead? Grow the **** up. You claim to be
civil, but your petty little observations are far from that. Keep them
to yourself. THAT would be civil. Otherwise, just **** off, 'cause your
retarded ass isn't any different than anyone else.
 
On Fri, 23 Nov 2007 10:17:30 -0800, ChairmanOfTheBored wrote:

Otherwise, just **** off, 'cause your
retarded ass isn't any different than anyone else.

Including your retarded ass.

:)
 
You're a goddamned idiot. Following me around my posts like a little
****ing child.

I never said a goddamned thing about shit in the above post, but then
walks in you, the ultimate piece of shit., spewing it all over the place.

Well, asses and toilets are right on your topic. Pretty creepy.
There... satisfied, shithead? Grow the **** up. You claim to be
civil, but your petty little observations are far from that. Keep them
to yourself. THAT would be civil. Otherwise, just **** off, 'cause your
retarded ass isn't any different than anyone else.


OK, s-word : 3 times

F-word : 3

Ass : 1

Obsessed for sure.

Now we know what Dark Matter was actually composed of.

Ick.

John
 
ChairmanOfTheBored said:
It is so you can be tracked, and allows you to affirm your paranoia.

They could just call me on my cell phone and ask where I'm located. My
customers all do that. For a while, I was using ham radio and APRS to
display my location.
<http://www.findu.com>
However, that caused problems where customers would monitor my
location, and call my cell phone when I was close, asking for a free
"quick visit" to fix some stupid minor problem where they didn't want
to pay for a scheduled service call. One of these per day would not
have been bad and even convenient, but there were days when I would
get 4 or more such calls. Let them guess where I'm hiding. It also
was using ham radio for commercial purposes which is frowned upon by
the FCC.

Why would they want my DNA? Is the government looking for superior
heredity and trying to contrive a master race of geeks? Super-Dilbert?
What a horrible thought.
**** off. Next time use more than two brain cells.

My keyboard has 4 brain cells. They're type AA incidentally.
Your remarks of being paranoid was not humor. You don't get to snake
away that easily.

True. Paranoia as a way of life in engineering is not humor, but is
necessity. There are plenty of things to worry about when designing a
product. What worries me is certainly not the same as whatever is
driving you up the wall with worry. Like any good thing, it can be
overdone. Perhaps you should worry about worrying too much or
possibly worrying too little? Of course, if you worry too much,
that's all you'll be doing and will not have time to do any useful
work. Fortunately, you don't have to worry about what I think of you.
What? Me Worry?
You don't have any status of any kind. You have too low of an IQ to
acquire a status.

The last time my IQ was tested was in High Skool in the early 1960's.
I think it was 135. Does that help? I don't pretend to be
particularly overly smart or intelligent. I have a few useful talents
that supplies me with the necessary funds to maintain my decadent and
lavish lifestyle. I've also been very lucky and am rather devious and
sneaky, which incidentally have nothing to do with IQ or status.
However, perception is everything, and I tend to look like an aging
nerd. I think it might be the pocket protector full of junk and the
Batman utility belt with PDA, phone, flashlight, multi-malfunction
tool, etc.
Like I said... bullshit.

So there's no misunderstanding, I tend to ignore unsubstantiated
judgments. One line pontifications are worthless. I really don't
care for your opinions, good or bad. What I do care is *WHY* you fail
to appreciate my opinions and comments. Some detail beyond one line
denunciations would be helpful.
Droll... very droll. Even Fred Flintstone would want to drop a
rooftop on you.

You must have a very sophisticated sense of humor. That happens to me
as I approach a project deadline. Perhaps some better planning would
help. Anyway, since you missed my point, I'll explain. English is a
concise language. If your writing is so contorted that it is subject
to misinterpretation, you can be sure that someone will misinterpret
it. It may be of no consequence in usenet discussions but you may
have some difficulties in contracts, business plans, proposals, etc.
Try really hard to be precise and unambiguous. It's a useful skill.
No. Your firewall sets your ports for access or not. Only YOU and a
specific piece of software meant to MONITOR them will perform the
monitoring task.

True. A few of my customers have IDS (intrusion detection system)
software installed. I'm the one that usually has to dig through the
syslog mess. I have Snort installed in my office but not running.
That's because in 6 months of slogging through the monstrous log
files, it never caught a single successful attacker. Zillions of
probes and exploit attempts, but no real success. The real problems
were from wireless attacks on the LAN side, that completely bypass the
firewall. Also visitors that arrive with virus infected laptops that
just plug into the LAN side. My main defense is arpwatch, which
detects a new MAC address on the LAN, and immediately blocks the MAC
address at the switch until I manually approve the addition.
It's called secure communications, dipshit. "Our boys" are the allied
soldier stationed around the world. Get a clue.

Oh. I was thinking along a different line. I know very little about
military communications. However, I was instrumental in shipping two
cases of generic FRS radios to Iraq when some secure military
communications system didn't quite work.
My PC camera lens assembly is stationed BEHIND a clear plastic shield
and is not exposed to grubby finger contact or the elements, so it
doesn't need a ****ing lens cover to keep grubby fingered idiots like you
from touching it.

Yeah. That works for small lenses and pin hole cameras. However,
your assumption that such lenses do not require cleaning is wrong. I
have cleaned up far too many customers cameras that are full of dust
to suspect that it's not a problem. Same with cancer stick smog and
condensed kitchen grease. It's possible that the lack of lens cap
might be an economy move, but I suspect it's something more devious,
like spying.
You're an idiot.


Not if it only gets plugged in when it is going to be used for a video
comm link.

True. However, most users leave it plugged into a USB port all the
time. You never know when you might get an Instant Messenger type of
call that requires video.
See above, dumbfuck.

So, you unplug your USB camera when it's not in use? It appears that
you're already sufficiently paranoid. This is good. Don't forget to
unplug your headset, microphone, and flat bed scanner. They can also
be used to spy on your activities.

I'm not one of your "boys".
Oh boy! Heathkit!

Actually, I worked for a Heathkit store in downtown Smog Angeles in
the late 1960's. I learned quite a bit about dealing with do it
thyself builders, some marginal designs, and the value of really good
documentation. I still have quite a bit of Heathkit hardware in
various stages of resurrection. I really miss the good old daze when
I could actually see the components.
Or in some lame surplus store no doubt.

Actually, I made the mistake of admitting that I worked on some of
this and am regularly barraged with email asking for manuals,
schematics, parts, and information. I'm slowly scanning in the old
Intech Marine manuals for posting in the boat anchor manuals (BAMA)
archives. They may be old, but they're still working and useful.
Ah... a design janitor.

Yep. I get brought in to terrorize the staff engineers.
Ah... a business plan janitor...

Yep. I read and sometimes help write science fiction. Anyone can
write a decent business plan from a template if they know all the
details and can successfully predict the future. However, that's
never the case, so that's where the science fiction is added. If you
ever need some entertainment value, have a company that's been running
for about 3-5 years show you their original business plan.
Do you do your doo doo diligence?

I've done did da due diligence to death. That's where a really
paranoid mind can come in handy. Just list all the things that can go
wrong with the product or company. Then tack it onto the SEC reports
to inform the stock holders. I once added a variety of improbable
disasters to the list, just to make sure everything was considered,
but management wisely threw out everything below Hillary getting
elected.
Ah... a product proposal janitor.

Those are the most fun and most difficult. The problem is that
experienced investment bankers and venture capitalizers all have a
good sense of what is possible. They can sorta smell something wrong.
So, at the very last minute, just before the contracts are going to be
signed, I get a call to quickly look over a mountain of PDF's and "see
if I can find anything wrong". I've done fairly well with these and
credit myself with uncovering more than one science fiction scam.

However, my batting average isn't perfect. I predicted that the iPod
would not sell, mostly because I couldn't see myself with earphones
shoved into my ears most of the day. I guess I discovered the
generation gap a bit late.
Ah... a production problem janitor...

Yep. Someone has to clean up the mess you make. Most engineers are
happy enough to just make something that works. Never mind if it can
be built efficiently or reliably. I don't do much of that any more
because I've been out of touch with todays production methods (i.e.
offshoring) and can't offer much beyond a few minor tweaks.
Better get to work then janitor boy. Your posts are full of shit.

Yep. I just bought some dead test equipment on eBay (Wavetek 3000B).
Time to see if I can raise the dead.

Incidentally, I've been answering questions on usenet since the stone
age. Mostly in comp.unix.sco.misc and lately in
alt.internet.wireless. Someone has to play janitor and clean up after
you:
<http://groups.google.com/groups/pro...AAGTj9X4k0U7wKkGyU8QhaBhaxMG2M1PWkMtCZAt5tdxQ>
 
Skybuck Flying said:
Hey Man,

Somebody else confirmed it already he has it as well.

Personally, I like the clarity in your most recent cross post.
Before it wasn't so obvious that you've lost it.
 
OK, s-word : 3 times

F-word : 3

Ass : 1

Obsessed for sure.

You're a goddamned idiot. As well as being a piece of shit.
Now we know what Dark Matter was actually composed of.

Looks to me as if you are guilty of the same behavior, yet you claim
mine is an obsession. You don't see me making the same claim about you,
even though here you demonstrate the same exact behavior. Good job,
hypocrite.
 
They could just call me on my cell phone and ask where I'm located. My
customers all do that. For a while, I was using ham radio and APRS to
display my location.


They wouldn't need to call you or ask where you are. Most cell phones
have GPS in them, and the ones that do not can be triangulated to from
the cell node towers. All they would have to do is poll your number. No
call required, no query required.

The only way out is to walk around with your cell phone completely
turned off. Another way would be to have a cell phone that is registered
to someone else.
 
You're a goddamned idiot. As well as being a piece of shit.

Looks to me as if you are guilty of the same behavior, yet you claim
mine is an obsession. You don't see me making the same claim about you,
even though here you demonstrate the same exact behavior. Good job,
hypocrite.


S-word: 1

Hey, much improved! You're on the road to recovery!

John
 
In alt.comp.hardware.pc-homebuilt ChairmanOfTheBored
They wouldn't need to call you or ask where you are. Most cell phones
have GPS in them, and the ones that do not can be triangulated to from
the cell node towers. All they would have to do is poll your number. No
call required, no query required.
All new cell-phones are *required* to have locating ability in them; if
not GPS then triangulation from cell-towers.

They *claim* this is so that 911 calls can be properly routed.
(And I suppose they actually do it for that as a secondary reason.)
The *real* reason is so that police can trace a call to where it was
made from. The police-state we're heading towards hated the possibility
of people making untraceable calls ... so the legislature ruled that if
phone-companies were going to make mobile (cell) phones, they should be
as traceable and locateable as present land-lines are.
The only way out is to walk around with your cell phone completely
turned off. Another way would be to have a cell phone that is registered
to someone else.

Turning the phone off works ... For now.
At present, there are too many places that *require* phones to be off;
(like hospitals and other sensitive areas) not just to prevent ringing,
but to prevent *transmitting*; which is needed for the locating to work.

I *suspect* that a few (less than ten, by my estimate) years down the
road cell phones won't even *have* an "off" function that does anything
besides disabling the ringer. There *will* be a disabling function to
prevent transmission from certain places (like your police-station or a
hospital) but such places will install a device that registers when you
come into the area and are turned off, and when you leave. Thus you
won't be able to make unauthorized calls from the SS office or any
government building, and won't escape being tracked by the gestapo
either, if you have one on you. All they need to know is your number.

You'll probably (eventually) have to enter your valid government ID to
buy one.

This, of course, will be seen as a big step forward by those like BAH
who view our progression to a police-state where government watches
everybody and decides what we do and where we can go is something to be
desired "for security" to keep outsiders from doing nasty things. That
(like so many things such people advocate) it removes freedoms we've
traditionally enjoyed previously, seems like a small price to pay ...
Until it's WAY too late, of course.

What's that quote?
"Those who would give up Essential Liberty to purchase a little
Temporary Safety, deserve neither Liberty nor Safety."
Attributed to Benjamin Franklin; but likely from Richard Jackson
instead; though I doubt Benji would have disagreed.

BAH, of course, seems to think it's a very good trade indeed, from what
she supports if the present administration pushes it.
 
They wouldn't need to call you or ask where you are. Most cell phones
have GPS in them, and the ones that do not can be triangulated to from
the cell node towers. All they would have to do is poll your number. No
call required, no query required.

The only way out is to walk around with your cell phone completely
turned off. Another way would be to have a cell phone that is registered
to someone else.

Now we know your overload threshold. About 200 lines of careful
analysis, detailed refutations, and personal suggestions is required.
Predictably, you retreat to a safe topic which you allegedly know
something about. Amazingly, you offer no accusations of incompetence
or ineptitude, so I'll presume my status has been elevated from
"idiot" to something more acceptable. I'll be expecting your apology
shortly.

You're absolutely correct about cellular tracking as far as it goes.
Given sufficient technology, motivation, and funding, such things are
possible. In most cases, the location needs to be sufficient to
perform an apprehension. That's often difficult with some of the
existing technology.

For example, handset based GPS and AGPS (augmented GPS) rely on the
ability of the GPS engine to supply sufficient satellite delays for
the location services provider to calculate a location. The GPS data
is augmented by latency data from the cell towers. Under ideal and
FCC test conditions, it works as advertised. Under an ever growing
number of conditions, it sucks. GPS barely works indoors and in some
"shielded" vehicles. Acquisition time is decreasing with newer and
smarter chipsets, but still requires more operating time than the
typical cell phone battery can comfortably provide. Even the PSAP
(public safety answering points) is hesitant to MANUALLY request a
position report due to the power consumption problem. Tracking
someone around town with regular will certainly show up as a major
battery drain and unusual transmission rate, which is easily detected
by a personal RF detector, or one of those antennas with the LED
inside.

The indoor GPS problem is bad enough to support a startup.
<http://www.rosum.com>
Rosum uses TV transmitters to triangulate a location in areas where
GPS sucks.

The network based location technologies are even worse. Most use some
variation on TDOA (time difference of arrival) technology, where the
latency between the handset and more than one cell tower yields the
location. Two towers will give an ambiguous location. Three towers
will provide a non-ambiguous fix. The problem is finding a location
where you have a simultaneous non-reflective path to 3 cell towers.
That's possible in open flat areas but a rather dubious proposition in
crowded cities.
<http://news.zdnet.com/2100-1035-6143866.html>
Reverse engineering how James Kim was found should offer some clue as
to capabilities and limitations.
<http://news.zdnet.com/2100-1035-6140794.html>

There's also a problem with cell site capacity. Presumably, one of
the three sites is being used for communications, while the other two
are listening on the same channel (or time slot) for just location
data. That's fine for following perhaps one or two cell phones around
the city, but could overload the channel capacity of the cell site if
used extensively. Certainly, the cellular companies are not
particularly interested in installing extra hardware at their cell
sites that do not generate revenue. So, they sell LBS (location based
services) to pay for the extra hardware:
<http://news.zdnet.com/2100-1035-6135209.html>

The accuracy of such systems are not particularly good. AGPS handset
based systems must locate handsets within 150 meters 95 percent of the
time, and within 50 meters about 67 percent of the time. Network
based location systems are only expected to locate handsets within 300
meters 95 percent of the time, and within 150 meters 67 percent of
time. Even that is problematic as the FCC had instigated a review of
location accuracy and testing methods. It seems that the network
providers decided that everyone with a handset must obviously be
inside a vehicle and driving down a road. By using a database of
known road locations, they simply rounded off the calculated position
to the nearest roadway. The probably is adequate for most E911
applications, but can cause some rather interesting looking plots if
one were trying to follow someone around town. Incidentally, the FCC
also wants to extend the location requirements to VoIP providers.
<http://news.zdnet.com/2100-1035_22-6188332.html>

I won't go into detail on countermeasures for fear of hitting your 200
line posting limit. Suffice to say that shielding the GPS antenna in
the cell phone for handset based systems, and using a directional
cellular antenna for network based systems, is sufficient to break
either.

For the truly paranoid, there's also a problem with temporarily
turning off the cell phone. For handset based systems, I've noticed
that the initial handshake is now taking much longer than with earlier
non-GPS handsets. My guess(tm) is that the handset is sending the
last set of satellite delays to the cellular provider in order to
reduce computation times. However, this is admittedly speculation.

Drivel:
Cell Sites of Santa Cruz County:
<http://802.11junk.com/cellular/>
I haven't done anything with this site since about 2001. Since then,
the number of cell sites in the county has roughly doubled. Since I
now have a new camera (Canon S5-IS), I'll probably expand the web
site. Anyway, the plan was to provide coverage estimates and maps.
For example (at bottom of page):
<http://802.11junk.com/cellular/jeffl/SVLY-PGE/>
 
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