And how long before police deploy such blockers routinely during operation? http://news.ycombinator.com/item?id=1999171 http://news.ycombinator.com/item?id=199

And how long before police deploy such blockers routinely during operation? http://news.ycombinator.com/item?id=1999171 http://news.ycombinator.com/item?id=1999171 http://news.ycombinator.com/item?id=1047495 http://news.ycombinator.com/item?id=1047495