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A comment on Personal Cell Phone Jammer, $27.41. Parent comment

Re:Personal Cell Phone Jammer, $27.41 by eli on Tuesday August 18, 2009 @08:33AM (#770287)
Huh? How exactly did you conclude that it would take less energy to build a fully functional mobile cell phone tower that supports a variety of incompatible protocols, all of which are secured with non-trivial encryption?

Even without the encryption, it is extremely difficult to demodulate a GSM signal

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Re:Personal Cell Phone Jammer, $27.41 by ars on Tuesday August 18, 2009 @08:42AM (#770296)
Perhaps you have a different meaning of the word energy? It will certainly take less radio energy to do what I suggested.

And as for GSM, have a look at http://mobile.slashdot.org/story/09/08/17/0014235/Open-Sourc...

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Re:Personal Cell Phone Jammer, $27.41 by dhimes on Tuesday August 18, 2009 @09:22AM (#770357)
Perhaps he interpreted your comment to mean "less energy for the hacker to build" rather than "less battery power for the device to operate."
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Re:Personal Cell Phone Jammer, $27.41 by eli on Tuesday August 18, 2009 @09:30AM (#770384)
Indeed. And I'm not convinced it would take less battery power to build a working cell tower.
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