cellphone jammers

Cellphone jammers come under scrutiny in Canada

We can jokingly say things like “buy a cellphone jammer to silence those annoying people on the bus” but that would be irresponsible. Quite irresponsible, it turns out, as criminals are now using

Peace and quiet: UK train operator to block cellphone calls

A commuter rail company in the UK will install cellphone signal-blocking film on train windows in order to keep the peace. The film, which was developed in America, prevents cellphone signal from ente