But modern technology has afforded them new, more private avenues for communication. Visitors and prison guards smuggle in cell phones, a brisk trade that prison authorities are constantly working on trying to stop or at least discourage by deadening phone signals. But those efforts haven’t worked. “Contraband cellphones make it into facilities all the time,” says Electronic Frontier Foundation investigative researcher Dave Maass.

Friday, September 9, 2016
Wired