[pepsionice]

Its a curious thing. Restaurants in NYC already jam cellphone coverage within their property. A number of theaters already jam. There are intelligence-related government agencies which do this. And finally, you would have to imagine that the White House ought to be doing if they aren’t already.

[allmost]

The trend of remote bombs being detonated by cellphones has made jamming relatively commonplace for leaders worldwide. Like you said, it’s relatively common in private enterprise as well. Why they need permission to use the technology in prisons escapes me.

[Bobalu]

This young engineer has designed a low-cost cell jammer.

www.ladyada.net