P>      Fortunately so far nobody has been stupid enough to do such a thing
 P> here.

Jamming cellurar phones is very common practice in many countries - in
restaraunts, cinemas, theatres, museums, banks, clinics, some private
companies, etc - where phone ring can disturb people. Usually you can see sign
- "No cellular" there.

 P> There is a HUGE liability in jamming cell phones. Say a friend of
 P> mine has a heart attack and because of the jammer I waste 60 seconds
 P> trying to call 911. Now everyone knows how precious those few seconds
 P> were. Say my friend dies and it can be proven that if the call came
 P> through 60 seconds earlier he would have lived (hard but not
 P> impossible to prove), how much should I sue that restaurant for?

Nothing. Cellurar phone service is not guaranteed service, you can use it only
on "AS IS" basis - check your agreement with the service provider. For example,
you can not sue mobile operator, if it did not work in some region for some
hours (common in developed countries - 2-3 hours out of service during the next
software update on the calling center). Typical cellular service availability -
90-95%, you can not rely on it in any safety-critical situations - use wired
phones instead.

 P> Jamming cell phones is NOT a solution, social control is the only way
 P> to do it.

In fact, jamming cellular phones is very common solution. There are many
companies, producing this equipment. Just few links:
http://www.admonsys.com/jammers/jam_4.htm
http://www.uptronindia.com/products/standard_hpjam.htm
http://www.spytec.com/spezialelektronik/handyblocker.htm
http://www.retia.cz/retia/uk_rm.htm
http://www.cb-security.com/catalogue/sirjam2.htm
http://www.cguard.com/English/latests/index.html

Alexey

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